This thread has been very helpful and too much of a coincidence for me not to post. Before I get into it, Weezard thanks for keeping your name the same across multiple forums, googling your name was what made me find and join this forum.

Crunchy - Completely independently, I swear :-), we ended up with almost the same LED set. I purchased 4 660, 1 Dental, and 2 WW 15watts from LEDEngin.

I'm in the process of getting all my materials together and am trying to figure out how to power these beasts, circuit theory 1 was entirely too long ago and I'm struggling. I'm thinking about going the easy route since I don't the appropriate equipment to create my own driver, so... I'm thinking of going the route of Mean Well PLN-60-48 to power the blue and the ww in series since their Vf is similar and possibly getting another one to power the 4 reds. First, is that the right choice? Secondly, I have a email out to LEDEngine for a data sheet on the 660, but if the numbers match the regular red data sheet I think I would be ok using the same power supply for my 660's. I've read this entire thread about 3 times now and I don't think the Vf for the 660's was measured, is it around 11V?

I also bought 7 cheap cpu heat sinks w/ fans to cool the LED's. Is there an easy way for me to power the cpu fans with the power supplies above or am I going to have to power them some other way?

Weezard - you have no idea how much research I have done in the past month, it's almost embarrassing. Finding and reading your posts was quite exciting and convinced me to spend my cash. Thanks.