Race Face Narrow Wide Chainrings are one hot product at bikeman.com these days. If you want to run single ring setup, just grab one of these 9/10/11 speed compatible rings and a SRAM type 2 or Shimano Shadow Plus clutch style rear deraileur and you have a near perfect, "no drop", combination. "No drop" refers to the fact that you will be hard pressed to drop a chain, even without a chainchecker, when running this set up.
https://www.bikeman.com/Raceface_Narr...