I really like the idea of a dynamo hub and have enjoyed hearing the pros and cons here. I could see that it would be useful on longer tours where you don't have charging stations readily available, and I do expect to do those at some point. I think, though, for now, I will forego this option, until I can convince my husband to add a 4th bike to my stable for a dedicated commuter :-) (If only he'd sell his motorcycle to make room!)

I'm checking out all of the recommendations here. So many great ones! I think I may try out one of the cheapie options first, because it's worth 40 bucks to give it a try. If that doesn't work, then I have a lot of great options to pick from that will fit the bill. Thanks everyone!