I don't grow but I read enouph. From what I've read Floros are less lumens than CFLs and you can place many CFLs for the same energy cost as a regular floro and CFLs go in regular sockets. All in all easier to set up. CFLs will work great for veg, but You may be up for around the same results as a floro for flowering. the lumens on CFL's just aren't up to par. It would take like 80 CFL's to equal one good HID in lumens. Thats where the major difference is. You can get CFLs with the right color range but getting your plants the amount of lumens you want (which is what will increase the yeild) is toupher with CFL's.

That all said, if I set up a grow, which would be uber stealth, I would go with all CFL's for reduced power consumption (no spikes in electric bill to notify the authorities), cheaper initial setup, and the smaller space required.

Just plan on a rather modest yeild, which is ok with me, if I do grow anything It'd be for the joy of building it and watching it grow more than having lbs. of pot when I'm done.