Last year was my first year racing 'cross. Did about a half dozen races on a pretty much traditional 'cross set-up: 36/46T chainrings (130BCD) and a 12-27T cassette. Components are SRAM Apex. I found myself spending a more time in the small chainring. I'm seriously thinking of going to a 1x10 set-up for simplicity, weight savings, cool factor, etc. I think a 40T chainring would probably be the way to go. Maybe Wolf Tooth. My head is spinning on contemplating the rear. I could pretty much go immediately with a 11-28T and use my Apex RD but not sure I would have the low-end I need. I have thought about a WiFli derailleur and an 11-32T. Another option that I have just started looking at is a MTB RD like a SRAM X9. Then I could go as high as an 11-36T cassette if I needed it for something like a gravel event. The SRAM MTB Rear Derailleur "Roller Bearing Clutch" for driveline stability sounds interesting. Any advice/experience/thoughts on the rear derailleur and cassette options would be appreciated.