So I've been thinking about buying a bicycle recently. The thing is, I'm looking for something that would serve as a means of conveyance: something basic and low-maintenance that would last a while. And what I keep finding are thousand-dollar ultra-light bikes designed to win cycling competitions. I'm not going to enter the Tour de France, but on the other hand I'm afraid that if I go with a bargain-bin bike I'll end up with something that falls apart in a few months. Can anyone recommend something relatively inexpensive that's best suited for going down the street to the park?