i agree that the ati t5s are very good....my clams are enjoying the sun pro hitting on their mantles...
but main tank lighting using t5s and mhs are different issues, the pure look of the light rays from the mhs are something the t5 cant match, coz the sun is a point source of light, not a tube of light..hehe
but other than natural aspects, t5 is the modern way to go....move aside FLs and PLs....its time for T5 to pick a fight with MHs