I've used air tech pumps, aqua-culture pumps, and hagen maxima pumps. The air tech pumps are kinda noisy. I needed one quickly, and I bought a couple 10 gallon air tech pumps for about $6 at petsmart. They are great to have on hand in case of emergency circumstances.
I keep mine on rubber mats. I run a 40 gallon aqua-culture pump for my 29 gallon. I have a cabinet stand and stick it inside the cabinet and then run the airline out the back of the cabinet. I don't even hear it and its in my bedroom. Of course, if you stick a pump inside your stand you want to make sure you have a good check-valve.
My 10 gallon does not have a cabinet stand- so it just has a pump on a rubber mat next to it.
I have a couple maxima pumps that I'm not even using right now. Of course, I have an extra heater and stuff, too. I'm kinda paranoid.
Anyway, little rubber mats work great. Or you can use the rubber gripper things that you can buy for opening coke bottles.
Good Luck!