Yah man, they're definitely not a 100% solution. I love them because when you get enough of them, they're crazy powerful, way more powerful than I ever gave them credit for before hand (hence 8 units running at 75% max power when I really only needed 6), but I've never seen an LED tank look as good in person as some of the T5 tanks I've seen. Argentiner's tank that I saw today is T5 and his is everything I hope mine one day becomes, it was spectacular. I'm not sure if it's that I just have them way too bright for some corals, or what the deal is, but certain corals just don't hold their 'zing' colours under my lights, while others (like that tricolour) almost hurt to look at they're so electric. So far, I'm willing to trade off the colour losses when they do occur for the fact that my tank actually has a sunrise and a sunset, and how much the look of it changes over the course of a day. I can wake up on a Saturday and look at the tank in it's morning light, then go out and come back at 1pm and it's like looking at a completely different tank. I even get an hour of hyper crazy royal blue (which I wouldn't want all the time) right before bed.
I'm just now starting to play with coral positioning, and considering adjusting my light schedule to see if I can bump up the colours that I've lost without compromising the growth, but it makes me nervous to mess with a good thing if you know what I mean. I'm sure part of the issue is also that this tank has been darn near close to ULNS for months, so things are a little more pastel regardless of lights anyway. I don't think I'd ever ditch LEDs now that I've had a taste of their overall intensity and controllability, but I definitely wouldn't buy another fixture unless it had the same sort of diode mix that the new radion pro has. I think the success of LEDs is going to be when the diode colour mixes start to approach the richness and breadth of what you can accomplish with T5s. I think if I had something closer to the 'true UV', as well as a few more peaks on the deeper blue end in there, the colours would pop a bit more, and the corals that fade might hold on to some of their 'zing'. However, a many thousand dollar upgrade to radion pros is not in the cards for a while.
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