Just be carefull on the Kelvin ratings. 6400K-6500K for veg and 2700K for flowering/
I generally order my lights from the link below. Click on some of the sizes to get an idea of what Ks are available per watt, cost/etc.
2 to 200 Watt Compact Fluorescent Bulbs : 1000Bulbs.com
In my small area I'm veggin on 6-27W 6500K
27 to 28 Watt 6500 Kelvin Compact Fluorescents
and 6 26W 6400K
26 Watt Compact Fluorescents
Overkill? perhaps, but that's ok.
I actually have a 400 swichable MH/HPS but I'm gonna try a start to finish CFL thing.
I've looked at HD, WalMart, etc and can never find the K rating on the boxes, and if I did, some listed 3000K as "daylight" which I believe is incorrect???
Just mind your "Ks"!
Hope that helps.