Originally Posted by
frankenmike
It's already been said, but I am going to repeat: fully rigid mountain bike with slick tires. Can be had used for well under your budget, and is plenty tough for any abuse you can dish out.
What he said...these are heavier but think about the workout you'll get. I commute 34 miles roundtrip on mine and occasionally get on my road bike for weekend rides and I fly on that bike because it feels so light. The larger tires make it much more tolerable when hitting potholes and jumping on and off curbs. My .02
Ride safe,
Jeff