I apologize for being so smirky a few posts back. I'm not really sure why I get away with using so many really cheap bicycling products. My bike and all its parts and accessories get A LOT of use, at least from April to November, and very few things ever break down. I've had my $30 Specialized Air Tool pump for a number of years, have used it on all my bikes, all my friends' and neighbors' bikes, and lots of strangers' bikes (both Presta and Schrader) and have never even given a thought as to whether it's good enough or needs to be replaced. It's built tough, has a very easy-to-read gauge that appears accurate, and doesn't pump air that smells like rotting corpses. There must be other very good pumps, but if you purchase this one, you probably won't have to think about this again for quite some time -- unless your co-workers beat the thing to death.