Duane,
I own 8 Design 36 LED units. I use them for front lighting. Below are links to 2 shows I recently ran them on. The first link is just a DJ party, so I turned the trees around to face the crowd.
Unfortunately, I do not have a haze/fog machine, so these are dry. Also, I'm using rear lighting in both, so it's not exactly a true representation of only the Design 36 LEDs, but it should give you an idea.
I did run one show with only the 8 Design 36 LEDs, but I haven't been able to post the pictures yet. I should have them up sometime this week though. I'll reply back with the link, when I get them up.
I will say, IMO, these things are BRIGHTER than a conventional 500W PAR64 can. Not quite as bright as a 1000W though...somewhere in between. I've also found that I can get a pretty good "white" (incandescent white, not LED white) light as you can see from some of the pics in the second link. (In fact, my entire rig is LED except for the DS250's.) If you're interested in the RGB setting for that, let me know.
Hope this helps.
Brian
http://dollarshort.com/dsp/joomla/component/option,com_...ry/cid,35/Itemid,27/http://dollarshort.com/dsp/joomla/component/option,com_...ry/cid,34/Itemid,27/