T5's are the second best lights you can get.But they aren't so cheap, Almost the same as MH.
Then VHO's and after that, PC's.
Out of MH,T5's,PC's,and VHO's I would get the T5's, they run much cooler then MH and are very bright.
You can go with the 48" Tek Light: 8-54W T5 HO Fluorescents, which...