lighting choice?

[lifeform]

I have a 50 gallon tank with a wooden canopy, 3 fish, couple of mushrooms, colony polyp, and a 30" lunar aqualight compact fluorescent light(130 watts). I have 3 1/2 inches of room between top of aquarium and canopy lid. I would like to upgrade to a 36" light does anyone have any suggestions as to which light to purchase? Which would be a better choice: compact fluorescent, vho or t-5? Finished fixture or retrofit kit? Thanks