At 230 you’ll want a 38. The rear feels like a traditional Horst link 4-bar, very predictable feel. You can run any shock on it without worrying about altering the feel. Once you get your shock dialed, it holds up great in corners and provides plenty of pop, if you need to boost over stuff. Lively bike. I’ve bottomed mine out and it never feels like it hits the hard stop (must have nailed the air pressure and tokens - stock setup alloy NX)