I'm a big fan of Jehmco.com. They sell quiet one and a few other brands of pumps. Best of all - he will size it correctly. Cheapest - probably not, but very, very competitive. And his expertise is very valuable.
I am building a DIY wet/dry trickle sump for my 150 High (48"x24"x31"). The top of the tank sitting on the stand is right around 6' and I need a pump that can handle the pressure. I don't know much about these pumps and have been shopping around on Amazon looking for the right one.
Does anyone have any suggestions for me that have dealt with these pumps before? Since the tank will be in my living room, pump noise will be a concern. I would like to increase the tunover on my tank because my little guys (African Cichlids) are growing and the bioload is increasing. Currently, I am running (2) AquaClear 110s (500s) as well as a Marineland Maxi-Jet 1200 to stir it up and increase the O2 with the addition of bubbles.