I have a Pike RCT3 29er, Yari RL 29er and a Rhythm 34.
I’m not a gnar to the power of extreme rider so unlikely to ever take any of these to the raggedy edge but ….. The RS forks feel to me stiffer than the Rhythm.
The big difference to me comes from the platforms. The RCT3 (charger?) damper on the Pike to me is superior to the others by some way.
The initial impressions from the Fox is that it is very smooth and is on a bike that is unlikely to ever need anything other than the compression dial run in open mode.
The Rhythm does have an open bath on the RHS but not on the other (125cc vs 10cc IIRC) – I won’t be running these for 125hrs before a lower leg service.
If cost wasn’t an option …… Pike.
If cost is an option the Rhythm is a corker for £183.