It was initially my fiance's idea, but I have to admit its a good form of exercise . Not to mention I should probably back off on the running in favor of a more joint friendly form of cardio. Riding will be a combination of hard top and mountain trails. (nothing too extreme though) Looking for suggestions and general info. Brands, features to consider, etc. I know you can spend a fortune, but realistically how much is a decent bike gonna cost?