I don't know why no one uses ViaAqua pumps. My VA2600 outputs 740gph @ 0' using 46w. At the head pressure that I'm running, I think I get about 350-400gph from it.
They're only about $35 online, and they are pretty reliable. I have honestly never cleaned mine once in the last 8 months and it still restarts perfectly every time I turn it off. I also have mine restricted via a ball valve which is supposed to kill some pumps from the excess pressure, but I haven't gotten so much as a hum out of it. Which brings up my favorite point about it... its damn near silent.