If you are considering the Leap to 11spd, this may help
Now that Shimano has entered the 1x11 game, we felt it beneficial to provide a gearing comparison chart for anyone considering making the leap to 1x11 gearing. A special thanks to Daryl Smith for all the great work compiling the data and putting it into an easy to read chart!
I have personally made the leap to XX1 and can honestly say it has lived up to the hype. There really is no need for a 2x set up anymore. The combination of the 10-42 cassette and the ability to quickly and easily swap out the front chainring based on ideal gearing for where you ride is a beautiful step in streamlining the shifting set up on your mountain bike.