1: I'm not an ADJ/Elation employee. But, I am a more than satisfied customer. Of course, I'm free to choose any products I want for anything since I don't have any product endorsement deals. Still, I've stuck with ADJ and Elation because, for lack of a better term, they've stuck with me, from the standpoint of they support and service what they sell point of view. Working as a VAR-type person in the data comm world as one of my many lives, I understand the need to charge a bit more when you feel you provide a SUPERIOR product with superior service. In my case, I front-end a lot of stuff for clients, resolving their issues faster than should they have been left to do it on their own with their service and maintenance contract.
2: Regarding your scene idea. Sure, if you want to make a Scene that is blackout(and I do suggest you do), and choose to trigger this using the "0" key, then yes, it will black out everything on the DMX chain, PROVIDED you set specific values to zeros(like shutters to close, dimmmer channels to zilch). Blackout is cutting off light, not necessarily all ZERO values. When I'm working on my big show, I have to maintain the light colors through the fades so it looks more natural. The Fusion Tri FX, not being on the DMX chain, would be EXLCUDED form your blackout, requiring an extra effort on your part, which means reaching for the UC3.
Would it be silly? Well, that's a matter of opinion I guess. Your need for sound active forces your hand and we do what we do to get the job done. Another idea would be to put the Fusion Tri FX on a switcher pack if you only intend to use it in sound active mode, but you have to deal with a boot cycle that will most likely take a few second. But the added cost of the switcher pack has to be factored in.
3: Regarding the EntTec solution coupled with freeware software:
First, my opinion. Similar to Jingles, I do not recommend such products. For me, this is part of my business, so as such I make the choice to choose products that are commercially available by a company that will support their products. This doesn't limit me to the ADJ and Elation brands as there are other commercial offerings of this nature. I am choosing ADJ and Elation solutions.
Again, no endorsement products. I buy what I like and use what I like and praise what I like, regardless of the brand. I had to buy a Chauvet flame bowl effect last year. Love it! I just didn't care for the ADJ offering, in addition to it being discontinued. I can't say I'm as thrilled with some of my other Chauvet fixtures through. Similarly, it's why I have mics from at least a dozen brands in my inventory.
Now, getting off the "brand toadie" soapbox, I did a show a couple of years ago with a band that did their own lights. Mostly Chauvet lights, but that's not the issue. They used some free software package with a cheap dongle to run their lights. The program didn't exactly appear to be feature rich or even all that great, but they got the job done and that's really all that matters in the end, right?
Even so, this is something that happens with free stuff. First, support is almost always non-existant. Stuff is provided as-is and you're on your own after that.
Second, Windows updates might knock your software and/or driver and/or hardware out of commission until updated versions are released, wihch may never happen. New OS's come out and the driver may never be updated to reflect the new OS. Say, items running in XP might not work in Vista(doubtful) or Win7(likely). At least you have a choice of researching other free software solutions, right? But what good does that do when your interface is unable to function?
So, what are your choices? Blow money on another cheap interface and gamble again? Waste time constantly researching new software to evaluate? Doesn't seem a good way to spend time or money to me. Or, do you jump in to a packaged product that works and has support?
I know you only want to do basic things, but sometimes basic business logic is the better way to go. If you're trying to be cheap, then sure, go with the cheap interfaces and free software. Will it work? Sure, it SHOULD work. But it's not a solution I would go with.
Here's a better example:
Doing a show with MyDMX, MyDMX was constantly freaking out on me, causing me endless grief the entire show, forcing me to focus on the lighting instead of monitoring the make-shift intercom and the audio feeds(I'm supposed to handle it all, but I would prefer to focus on audio). It was a non-stop fight, but I managed to pull it off.
Had I gone with cheap and free stuff, my support options are "go f... yourself" because I'd be screwed. No money means no motivation to support. With ADJ, it's more of a "we gotta look into this" and have since released a December 2010 Beta that appears to have addressed that issue. However, not to knock MyDMX, the show I'm working on is better served with Compu Show, and I splurged for the new software and hardware.
Sometimes going basic costs. My basic system usually involves a load out approaching $80K+ worth of gear.
It's your choice. Spending $60 on a "open" dongle, you have to ensure your software works with it. Trial and error.
Or for $199.99 at Guitar Center, you can get an Elation/ADJ DMX OPerator hardware controller. For $100 more, you can get MyDMX. Some dealers may be able to offer better pricing on either of these items. And really, for what you get out of MyDMX, it would probably cost you a few thousand dollars for a console that could do the same. But if you really want to go basic and cheap, the DMX Operator is widely available, well respected and often goes on sale for half that price I listed above, sometimes NEW at Guitar Center(they had a sale last spring selling those new in the box for $100 each).
So, $60 and I gotta do all the work, or $300 and I get a working solution out of the box(well, maybe I gotta download the latest off the internet, but that's so common it doesn't bug me except for the fact my internet connection sucks).
$60 and I can't get to work yet.... Lost time. Angry!! I hate lost time!!
$300 and I can start working that night... Hmmm, seems good to me. Realistically, that wouldn't happen unless I'd been making my shows offline in Demo mode though.
If you go with the free/cheap solution, nobody here is gonna kill you. People here use TONS of stuff because that's how it works out there in reality. The problem is that your questions about it aren't going to get answered because since it's not an ADJ product, there's no obligation to support it.
Then again, maybe a board full of UC3's is looking more attractive to you?