SRAM SRAM XX1 Groupset

This is hands down the best groupset I've ridden. I was worried I'd lose range vs. my 2x10, but I actually gained range! Didn't miss any gears actually and going back to a 2x10, I realized how often I'd double-shift in that setup. I can't say enough about this. The price is a little steep, but I've had no problems over about 3,000 miles on it other than it collecting more mud and needing to clean it a little more frequently than a 2x10 counterpart. The other downside is wheel compatibility - can't use it on some of my legacy wheel setups. Used that excuse to buy new stuff!  Less