lol doctorD..... First of all, using a HPS and Metal Halide will obviously yield more and grow faster but using some good cfls can give you a great yield and doesnt take much longer expecially doing hydro with cfls.
I've seen people get atleast TWO ounces or more using CFLs from start to finish, even flowering. So don't act like if you don't go blow $500 on a hps, ballast, bla bla bla that you won't get enough weed. You can get healthy plants that give you OUNCES and if you grow 3-6 plants you can dramatically multiply the yield. Ive seen people with cfl setups that continously grow 6 plants and yeild a 1/2 pound every 2 1/2 months
So whatever dude..im running cfls now and my plant looks awesome!!!