I have XT 11 and have run both 32 x 11-42 and 34 x 11-46 and went to the latter for more top end on descents and on flat trails--I'm very happy. My daughter has Sram GX Eagle 34 x 11-50 loves the range. She races XC and it's nice she has both climbing and top end gearing--sometimes I wish I had her one extra climbing gear. So, both are great, just get the range you need.