Catalina lights are very good. I have a 48" Solar T5HO 4x54w over my 125. It leaves a foot of tank at each end of the fixture, but I think it does fine with low light plants on the end. From the research I did for buying a light, you just can't beat the value of that light that is on sale.
T5 is better than PC. They are more efficient, last longer, and run cooler.
Good luck on the tank.