I just purchased 4 Concept:1 fixtures.
I got them used but with a 90 day warranty on them....(are the refurbished I wonder?)
I got them off of Ebay for $225 each. (what a deal, huh?)
They had a "factory tested" pink & black seal on them. The place I bought them from (Up "n" Out Auctions) said that they were not refurbished, but had been used at 1 show and were being sold by the original owner.
The production date on them is March 2005, so they can't be that old.
Anyhoo,
They work great and the band I'm in are very happy with me now.
The Concept:1 system works very well in tandem with the rest of my lights.
I'm a newbee to this forum and a newbee to intellegent lighting, so this is all very exciting to me (enough to get me on this forum).
Hello to everyone here!

I think is is Awesome that you got a great deal on the lights, I've been killing every loan shark to get the required FOUR to complete a very cool light show. I do have a question well, three to be exact. Now that you have had them for a while now do you find that they over heat to quickly, Do any of them malfunction independently of the other in a show, and what would you say would be the best DMX Controller for these light? Thanks

As far as a DMX controller, I have no idea (other than the Concept:C controller)
Overheat? No.
I've run them all night several times...never a problem.
Also, they have worked flawlessly with each other...no malfunctions.