Unless your commute has some wildly varying terrain (Hills!), then I think you'll be quite happy with any of the 1X systems. I know that's a minority view here and 2X and 3X's are much more common, but I prefer the 1X AND I have hills to contend with too. I have a conventional 1x10; I have a belt driven bike with a Nuvinci; and I have a bike with a Nexus 8. The 1x10 is definitely the most efficient (read: fastest), and I do have a few hills that I can only tackle with the 1X too.