if your full budget is $800, put about $100-$200 aside for accessories. My commuter is a Sirrus Specialized Sport (straight bars wit, in my case, added Ergon GP-5 grips for more hand positions) and would fit that price range. It works great as a commuter but I imagine any bike in that price range can work great for someone depending on their riding style. Ride a few and see what you like!