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Considering SRAM have historically been at a cheaper price point for their top-teir groups, it'll be interesting to see how they trickle down eTap shifting (if they do at all). A lot of SRAM's literature has been about how there is no mechanical difference between their groupsets, just lighter/more expensive materials, so you'd hope that they'd be good on updating their other groups too.
If we're at a point where you can get wireless Rival or 105 Di2 in a couple of years, that would be awesome.
To be honest I only use Sram mtb stuff. Have 10 speed 0X on the fatbike, and X1 on the New AM bike. I just prefer it.
My move to Shimano for road bikes is purely Down to economics. I cant be running mad expensive groupsets. But want the latest features. Shimano are simply the best as feeding Tech downwards. I Guess because they are big enough to work on loads of Components at the same time.