Would this pump be quiet enough to use to replace my Mag18 that's very noisy? It'd be used on an over the back closed loop system I have running. Any other suggestions in the $150.00 price range? I also found a Velocity T4 in the same price range. I'm needing at least 1000-1200 gph after about 5' of head. Anyone know of any good deals on used pumps can chime in as well!!! lol.