If you are going to use one of those i'd go with the aquamedic as opposed to the coralife. I've heard about more problems with the coralife than the aquamedic. I think that the aquamedic has lower quality parts personally. I have used both i use an aquamedic product currently i like it so far, the coralife one i had i returned. I will say though that i don't like the aquamedic or coralife brand bulbs
I kind of like the PC coralife fixtures, but their halide fixtures i don't like.