I had a 22-32-42 on my old bike but on my new Kona 29er, I went to a single 32 Wolftooth on the front with a 12-36 10 spd. cassette. I love the 1 x 10--quieter, simpler. The 32 works great for me and my terrain, others might like a 30 to help with climbing. (SRAM's 1 x 11 was too pricey for me and I didn't need the 42)