Right now I have a 400w HPS for bloom and a home made CFL setup for veg. I need more lighting for veg and am debating between a 4 bulb 4 foot T5 setup or a 400w mH.. Opinions? Heat isn't a huge concern, power isn't really either since I'm really only growing a few small plants for my good 'ole dad and not expanding past this setup. My closet is about 4 feet wide so space shouldn't be a problem..