You guys have gotta try Sunblaster T-5 HO's with Nanoflect reflectors. I've got 5 (2 shining down and 3 shining horizontally) working on an 8' sq ft space and I'm growing snow peas by the dozen, and my Tommy Toe is flowering and producing green fruit in just about a month.
They are relatively cool and I have absolutely no complaints.
http://www.harrisseeds.com/storefron...-fixtures.aspx
Charley