I use UVI Super actinic and love them.....But I might try aquascience bulbs as the pics junior takes the coral look amazing and that is what he uses......
I like the Geisman/ATI for the blue actinic(460nm) but for the purple actinic(420nm) I've tried many kinds (name brands and cheapos) and they all look good for the first few weeks but then seem to fade/dim quite a bit.
I have read good things about the fiji purple but havent tried those yet.
i have 2 fiji purple which are awesome from ATI and also just the stock brand from current actinic but want to switch that one out and a ATI blue plus looks nice with my MH. I have 4 T-5 bulbs total.