I really enjoy biking, but I know nothing about brand names or where to find the best ones, and I think it's time to upgrade. Basically, I ride all over the place, including bike paths on roads, trails in the woods, steep hills around the neighborhood, etc. I'll usually ride 3 times a week for 1-2 hours. Which kinds should I look into? I'm not willing to spend more than $250 at this point but I'd be interested in checking anything out. Websites would be helpful as well- thanks!