Is your setup mobile? You might also consider the Pocket Scans. They are pretty bright for 100 watts. Having all 4 on will draw 400 watts instead of 1000 watts. Remember that a 15 amp plug only has 15amps x 110volts = 1650 watts. And if your running 16 pars as well, plus amps, PA and whatever else might be on (differet plugs but still) the same circuit. I tripped a breaker at a show this weekend w/ my lights. Whoops... Pockets also have a pretty decent case that holds 4.
Here is a pic of mine w/ a 250 watt DJ Scan next to them so you can judge brightness:
http://www.creativedrought.com/Fat_Tues/Img_8119.jpg The scans are to the right, the spot is on the left.
--Kevin