Just thought I'd interject to say I'm curious how your end results turn out with respect to both durability and aesthetics. I'm entertaining the idea of building a high-powered, low cost light system, but, in addition to correct function, I would want a fairly sharp looking result.

Each of your efforts and trials will undoubtedly save me from much trial and error. I would also like to see your arrangements if possible. In other words, I'm just chiming in my request for final specs and pictures if possible.