Well i use 6 100 watt cfls & 2 300 cfls to veg,and must say works well and you can keep them very close to plants which helps keep them small.I plan on using a metal H 400 watt lamp which i know will be better for them and being ive got 10 clones to veg i expect a bettergrow thru out....Course im useing a 400 watt HPS lamp for flower.....I think cfls would lack nough lighting needed.
All i know is my first plant OMG is awesome using cfls to veg & HPS to flower.Almost ready to harvest and once again awesome