Hey everybody, I really appreciate all these responses. Great information, makes it easier for me to decide. I think at this point, judging by what people have (mostly) said, I'm going to get the Diamondback hybrid from my local shop. I think it'll be just fine for my purposes. If it turns out that I become an enthusiast and really want to stretch more, I'm sure the need for a higher-level bike will make itself obvious. When I took up a special musical instrument a few years ago, I got one for $300.....when I realized I was serious and that the "beginner model" was woefully inadequate, I quickly moved to purchase a $3000 model. I would do the same with a bike. Thanks again to all of you for your generous advice!