While I am a big fan of both t5s and mh/vho combo. Either route you go is great. T5s are superb as long as you have individual reflectors, with out it, it is a waste, dave you may want to reconsider that set up on ebay, its a single reflector, you're going to be losing a lot of light, also not many companies last i checked made 6ft bulbs for t5s, if you are insistant on going t5's, on a 6ft tank i'd recommend two 3ft setups. T5s are only going to get better. however i can not justify its pricing, and the loss of the shimmer effect is something that would weigh heavy on me if i had to give it up. I've been running mh for 3yrs now and never had to use a chiller, my tank never swings more then .3ths of a degree, from 80.8-81.1. 120$ for two mh bulbs or 120(in 6bulb config) 6bulbs on a t5 either way same money, i use mh bulbs for a min of 10-12months, at 8hours a day. I would love to get a tek light set up on my next tank and i am still weighing the option. I've read numerous times over and spoke with the t5 guru grimreefer about t5s they do lose their strength heavily after 5-6mnths and any of the hardcore sps tanks w/ t5s have stated that the bulbs do get changed frequently. If its on a fish only or softy/lps then thats one thing. not saying sps cant be done, obviously its been proven that it can be but its much more costly the t5 route, which is a big reason holding me back on them. I think as advances are made on t5s and now with uv coming out w/ t5s they will only get better, its still a fairly new technology. I gladly welcome it to the hobby. I think its a great alternative to mh but thats it, its not any cheaper or better. As far as the watts per gallon comment, its pretty much a void idea at this point as most hobbiest now know its more about light effeciency, spread and par then a watt per gallon, some stores will still use it as a reference but its a vague one at that. Anyways i know it may seem i am MH biased, but its proven itself time and time again. And while i am itching to get further into T5's and try them out, until its more cost effective and the technology advances a little further. I may have to hold off... for now