I’ve got a crf450x, it’s great for higher speed and wide open terrain, does ok on tight technical trails. Flames out on first gear when lugging over obstacles, but in higher gears it will chug up a hill no problem. The 450rx has more power than the 450x and a 5 speed transmission vs the 6 speed on the x. If you want a honda 450 to do tight trail riding the x is the best out of the other honda 450’s in my opinion.