Hello, I compared CAADX 2020 vs. 2021, and noticed some technical differences that I wasn't sure about. I've listed them below: 1. Is the 2021 Tubeless ready ? 2. The Shifters and derailleurs are Shimano 105 vs. Shimano GRX between the 2020 and 2021 respectively. Which one's better and how/why ? 3. The chain is KMCX 11 vs. KMC X10 between the 2020 and 2021 respectively. Which one's better and how/why ? Bottom line, my goal is to decide to pick 2020 vs. 2021 (seems $200 cheaper than 2020 version), and so your response will help me with that decision. Thank you Please help.
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