Question on Pumps

[PaulKlug]

I am looking for a pump to return water from sump to my main tank. My overflow does about 600 gph. This pump needs to return the water 5.5-6 feet up back into the tank. I am currently looking at the mag 9.5 that does about 720gph at 6 feet. My second option was one of your Gen-x. This is what I purchased to run with my MR-2. I dont have tank setup yet so I am not sure how it runs (but it looks and is made wonderfully). I was wondering if you reccomend the Gen-x for this purpose(return to tank up 6feet) and how they will do compared to a mag 9.5(not sure you have experience with either just though I'd ask). Also what Gen-x would be good for around 600 gph at around 6 feet. Or if you suggest another pump that is reliable that can do 600 gph at 6'.
Thanks andy for any help you can give me. I want to order this pump as soon as possible. So I can finally get water in this tank!

Paul

[MyReef]

I would get the MAG 9, unless you can use one of the GENX external pumps. I like the MAG's...I have used them for years without problems. They are a little quieter than the internal GENX also.