Here's a (somewhat dated) review of compressors: http://www.expeditionportal.com/res...627-overland-journal-air-compressor-test.html I'd recommend the small Slime pump. Comes in a usable housing, gauge + fittings. A wally world special would work as well, just a little bit of time to get it right. Personally I have the Adventure Designs pump. It came down to convenience (I was at the their store) and an 'eh why not' attitude. The guys who run it are nice & I wanted to support the store, it's local. Beat's going to Wal-mart, however if I had gone to an Autozone before Adventure Designs I'd probably have a slime pump. As far as I can tell, the various compressors are all different in some aspects. Some have plastic wrist pins, some don't. Some have plastic casings, some don't. Some have air cooling fins, some don't. Etc... Are the high dollar pumps w/ same compressors worth the money? That's up to the buyer, but at least be cognizant that there are cheap solutions & expensive solutions, all of which will work.