um...the droix X is ten times the phone...of anything HTC makes.
don't believe me? well as for software none of it matters. you can root either one to do what you want. droidX = bigger screen, thinner, higher resolution, same processor, more memory
just go to a verizon store and hold one in each hand. HTC phones are literally lightweight plastic trash compared to the motorolas.
jaxel is right about swype, it is good. too bad the droid X and droid 2 both come with it as well. :P