You'll have to be more specific with the dates for the picture commentaries so I can elaborate on what was going on. Typically, I do use a 15-foot I-Beam truss with Crank-2 stands. I have 2 additional 10-foot trusses and two extra 5-foot spans. I suppose I could create another 15-foot one if I wanted. Let me know what event you're talking about. I have only had intelligent lights since September 1, so before then it was 100% dimmer and power packs to control the lights using my DMX Operator.
Here's the deal with things like Vertigo over Intelligent lights:
Sound active lights use a simple circuit that is sound activated to cause the light to generate the movement of beams or even color changes(depends on the fixture). This technology is relatively inexpensive. The advantage is that you get movement without having control. However, I'm not knocking the random movement issues, because I personally like that.
With intelligent lights(I have some of those too), you get lots of control, but at a cost. Intelligent fixtures use DMX control, so you don't use a dimmer pack with these fixtures, that technology is built in. In the case of these color changers I have(Color Fusion), they use 7(NOT 4) channels of DMX control, of what I can remembner are: Red, Gree and Blue(1 channel each), Dimming, strobing and some mix mode. These are wash lights, so no movement. I have another brand's color changers, and I get dimming, color change, change speed and strobing, so 4 channels of control. These also are wash lights, so no movement.
I have, from the same brand, some moving yoke lights, which have anywhere from 6-9 DMX channels depending on how I configure them. I have Up/down and pan(L/R), dimming, gobo selection, gobo movement and speed, gobo bounce, color change and some other stuff. I can really just move this light all over the place.
Now, if you were looking at the October 1, 2006 pictures, there was a Sunray III and a Projector 150 in the middle, controlled via a PP-DMX20L(power pack). On the left and right, underhung, are the Color Fusions.
Using Dimmer packs, you gain control over lights you can safely dim, which is basically any type of incandecent or halogen ParCan type light. There are other lights. By dimming, you can vary the wattage output of the channel on the dimmer pack, thereby increasing or decreasing the amount of power available to the fixtures on the channel, which equates to more or less brightness. In the case of your Vertigos and any other "hi tech effect" lights with a motor, you do NOT want dimming, you want switching, which is simply on/off. Why? Starve that motor and you'll cause it to burn out and cause other eletrical problems.
Using a DMX controller, you can control your channels you want to dim and switch on/off, as well as manipulate your intelligent DMX fixtures. Alternatively, there is computer software packages that can control the fixtures as well by using DMX control, typically using a box or cable that goes from a 3 or 5-wire DMX to a USB port on the computer.
Back to non-Intel lights. By using something like the DP-DMX20L, you can choose from up to 4 fixtures you want on, depending on how you configure the pack. So, let's say, in my example, I use my Sunray III, my Mystic, my Vertigo and my Projector 150 connected to a PP-DMX20L(relay pack, simple on/off). I can put the Projector 150 on channel 4 and leave that one on all night and rotate through various logos I created. This leaves me three other lights I can choose from all night light. Say, run the Sunray III for 2 songs, then the Mystic for 2 songs, then the Vertigo for 2 songs.
As far as "what is better", that's a matter of opinion and application.
Take my scenario:
By using a 250-watt intel color changer, I replace 4 Par38's(I typically would hang a cluster of 4, gel'ed Red, Blue, Green and Yellow and then color blend). By going to the color changer, I concentrate more light in a smaller area, which is what I want, but I am limited to the color gels in the unit. But, if I total up the wattage of the Par38's at full on, I use 600-watts, meaning if I use 3 banks of these Par38's, I use up a 15-amp circuit(1800-watts), while 4 of the color changers is 1000-watt draw. I typically need to cover a minimum of 4 positions, but 6-8 is more my norm. I say this because you'll need to conserve current draw because you'll rarely get the power you need for big events, like what I do. What's better? In my case, I can live with the fewer color choices, and I get strobing, so the color changers work great for me. I can leave my tiny ADJ strobe in the truck since it's too small for my events anyways. Even if drop to 3 Par38's per cluster, I would then end up losing a DMX channel, which is OK, and then drop to 450-watts total draw per cluster, allowing me to run 4 3-lamp clusters at 100% on a 15-amp circuit, for a total of once again 1800 watts. I can run 6 of the other color changers at 1500-watts, and run 7 at 1750 watts total draw.
But what about the Color Fusions? Well, I can take out the intel color changers and wash most of my stages pretty good with the Color Fusions, which at full draw my pair eat a whole 15-amp circuit.
What about dance lights? Well, in my case, my Rover II, Electra, Sunray III, Mystic, Vertigo, Double Twist, Trilogy, Reflex and Barrel Flex work great, and personally I can't see how an intell effect is going to replace those.
But what about my moving yoke fixtures? My purpose of those is to be able to shoot a beam where I want it, be it a spot-light into the stage, or a beam above the stage or above the audience or into walls or into the crowd. I do intend to show off the fact that it moves, but the movable gobos(with or without bounce) and color changing will help to boost energy levels of the audience. With more sophisticated systems, I have seen big production shows using only moving heads for all their lights(and they still used follow-spots).
I even have a pair of follow-spots coming in any day now. Why? My clients want them and will want them used and operated during events.
Well, I went way off topic. Sorry, I'm obsessed with current draw these days. I think the main point is that as you grow, think ahead in not just control, but to draw as well. Always front-end your fixtures with a power distribution unit with a circuit breaker(not fuse) in it. Why? Pop your breakers, not house breakers, so if you pop yours, you can quickly reset it and you retain control over your gear and not anger the venue operator. There's a whole checklist of things to go over on that as well. Use Furman units, they work the best. I have lots of it, it's all I use for my power.
If you want to take this conversation off-line, use the general purpose email form(Contact Us link). Might be easier and I can ramble on less coherently.