Normal output fluorescents. They are just those regular coral life bulbs you sometimes see in pet shops. I believe most are about 40W or less. Advantage? Cheep as it comes. Disadvantage? 40W I would go with a nice package deal from Hello Lights...like you said...cheepest place around!
I'm not going to get them, I was just there looking at there systems, and I noticed them in the "New Systems" forum/page, so I thought I'd ask what NO stood for. T4TH