Quote Originally Posted by itself View Post
I am learning some neat stuff about rapid fire shifters. One of the big differences between SRAM and Shimano is the ratio. The Shimanos are a 2:1 ratio, which means more cable. Which can mean that it can be a bit more finicky with dirt, cable stretch, etc. The SRAM 1:1 require less cable and thus are not as high maintenance.
This has actually changed since the introduction of Shimano's Dyna Sys drivetrains in 2010. Now the actuation ratio varies across the cassette which allows for a consistent shifting effort across all the gears. It averages out to about 1.4:1, though.

Shimano stuff is solid. Sram stuff is great when it's working like it's supposed to, but it's definitely more finicky in my opinion.