To be honest, after spending all the money I did on CFLs for my first grow years ago, which came to almost a hundred dollars, I regret not going with a HID system from the beginning. Even if that meant converting a 150w HPS flood light into one, it made that much more a difference at harvest. You can still veg with a HPS, too. Just throw in some daylight spectrum to prevent serious stretching[ they claim it's daylight spectrum, but daylight isn't stark fucking white ], maybe a SCRoG net and some LST, you're good for vegging. Maybe it was just my micro grow space, but it also helped with space for the plants, a lot.