bought some at best in the midwest. 11rcm are great! thinner walls than t tech. more like cheyenne. seems more precise. but out of 20, have already had 3 bad ones. barbed needles and bad construction. i think they will be great once they nail it. however prices are higher than t tech and kingpin shipping sucks. t tech are here within 2 days every time. basically if you like kingpin tubes youll like them. not a game changer yet. im still sticking with t tech. also btw got some 9rl diamond tubes and they are total crap. my opinion