Does anyone know of any stores/ranges that sell and/or rent gen 3 and gen 5 glock 19s and 17s in the Denver, Colorado Springs, or Ft. Collins areas (preferably around Denver)? Can't decide which to go with. If the gen 3 fits my hand and shoots well I'll probably go with it since it's cheaper and proven. If any one else has some input comparing the two gens, I'm all ears. I just have experience with a gen 3 G35, which shot very well for me.