I’ve got a Reba 100mm on my Cotic Solaris with standard 9mm QR axle, and a X fusion Trace 120mm with 15mm axle on my Trance. The Reba’s feel real flexy now in comparison, therefore I’m on the look out for another Trace or Slide for the Solaris. The X Fusion is a different league.
I have the X-Fusion Slide, which has the same RL2 damper but 32mm uppers. Really like it. Smooth and stiff. No bells and whistles but everything works as it should. Lock-out is a proper lockout. I can’t comment on long term reliability yet, or compare to the Reba, since I have not ridden one.