If you're really worried about pot holes eating you wheels, either steer around the potholes or bunny hop them. Doing as much gives you many more, relatively inexpensive options for a bike on which to commute.
I bought a Dutch bike about a year and a half ago and I commute to uni (I ride for about 40 minutes) and it has been performing brilliantly. I don't know what you're after in a bike but I got mine from this place that does Dutch bikes and if you're not commuting too far, I'd definitely recommend it. They're a fairly small company but that makes the service so much more personal, I had no idea what kind of bike I'd need and they were so helpful in getting me what I needed. Take a look at their site, they're called Dutchie. Let me know what you think.