Hi, regarding the discussion about the comparision between XL and 105, I have a Tricross Specialized which came with Tiagra 9speed shifters and XL Deore derailleur, I did change the shifters for 105 10 speed, Do I have to change the Derailleur for 105 as well? Now, my cassette shimano 9 speed started working wrong, so I'm thinking to change it for a Deore 11-36 10 speed. taking in to consideration that I'm riding in average 150k per week, Is that decision ok?
Thanks.