for what you do the rincon would be perfect. i dont think that the high gear ratio issue would affect u much if you mostly trail ride, this only really hurts when you put on big heavy tires(27 or greater)and get in tough pulling situations. yes there is a much noticeable power difference in the 500 foreman and the foreman 450...as for the rubicon...I would not recommend it..many people that I know have them and they have lots of trouble with them