Good call on the cfl's in your house MisterE...I've done the same thing and found it helped the electric bill...They say every regular bulb you switch out not only saves you money in bulb costs but takes like a million cars or somethin off the road...

I've heard great things about the T5's but the easiest thing to check is just the rating of the bulb itself...find out the manufacturer and then look up at a search engine the specifications like the spectrum and kelvin temp...I've read that low kelvin temp bulbs are good for veg around 2000-3000 kelvin and 4000-65000 kelvin are good for bloom but you can read as indepth as ya want on the subject...I know when I got my floro's I just went with GE 20W grow lights and they've worked just fine for me...I wouldn't worry so much if yer just getting a few cheapies to get the grow started rather spend some serious time deciding how you are going to bloom them cause the light you choose for that will vary widely depending on how much ya want to yield and the temps of the room etc