I switched from Shimano to SRAM Rival with no problems. I found more differences within Shimano (Tiagra vs Ultegra derailleurs) than between the two brands, in terms of shifting quality and frequency of needing adjustments.
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles