i dont think darrell is goin to go full on trail riding. judging that he has a bad knee i would think he will be riding on the road or groomed trails for all intents and purposes. for this reason i think just about any cheap quality bike will work for him. i have a trek 800 that works great for me to tool around town and ride to work on. the only thing i think he should stay away from is a full suspension bike as in this price range they are not all that good.
doesnt matter what you get darrell...just make sure u are comfortable on it and have fun
