Power compact lights?

[MikeP]

I want to put better lights on my 30g. I need screw in type. I have screw in flourescents now putting out about 40 watts each. I want to keep easy corals and get some growth on my LR. I think I need power compacts? What should I buy, if possible give me some model numbers so I can find prices at a supplier rather than a LFS.

Thanks for any help.