t5 vs mh's setups

[fishguyxd]

I recently seen a fellow reefers lighting setup and he had I think it was 8 t5's
bulbs and i was surprised of what corals he had in his tank doing very well. and how little heat there was coming off these types of lites. I was thinking of getting mh's or something like the coralife pro setup with the mh 150 or 250 watts or should I just go with a T5 setup or mh mix now. I know the saying get the best lighting a person can get when buying. Would I be limited to what corals I can have with the t5 vs mh? and the cost and maint to upkeep them. Just looking for some imput.