R2000 Claris vs R3000 Sora
What are the main differences between Shimano Claris R2000 and Sora R3000 besides the jump from 8 speed to 9 speed cassettes. How much of a weight saving do you get from paying more for Sora. I'm on a very tight budget, but I ride a ton, so I don't want components crapping out on me because they're too cheap.