Hey Rob, sorry to hear about your tank troubles. Moving is hard and throwing in a finicky reef tank never makes it easier. As far as LEDs go, I have yet to see truly unequivocally positive results in my tank with my DIY LEDs either, but my tank has also just recently recovered from a series of bad events. At the very least I know my LEDs are growing SPS corals, but I feel like I need to get a few chemicals (nitrates...) in check as well as longer term stability before I make any true judgement calls.
Even if LEDs aren't the answer yet, I don't know if i could make any of the other light transitions at this point. I loved my T5's, but to light this size tank I would need at
least eight five footers, if not twelve three footers. Add in the electricity bill of ~450 watts (minimum) of T5's and 12x$20 bulbs every twelve months and I will have paid for LEDs many times over. If I went the other way and did tried and true MH's over my tank (a much better idea considering the footprint), I know for a fact that i would need to add a chiller to the system with all of those associated woes.
Last but not least, while I have yet to achieve rousing success with my LEDs, others have. As far as coral coloration goes I always suggest checking out
Sammy113's thread here on RC. I think it takes corals longer to adjust to LED light then other light sources, so since you have already dropped the money on the LEDs I would at least stick with it until you have some system stability before calling it quits.