I have only been cycling a year and 1/2. I have a nice Scott CR1 with 105 components which is more than enough.....BUT - I keep looking at SRAM stuff. Have heard a few friends talk about how much they like it and that was all it took, them talking and something I could think about.
1- It would save me weight - 1.7 lbs if I got red - I have another 8-10# to loose if I hit my goal, not having a light bike will help me reach my goal
2- "It shifts more briskly" - never had a problem with my 105. I have never ever ridden a SRAM bike so I really don't even know for sure if I would like it.
But - I feel compelled to check it out - Weird