I weigh 10st and I’ve had various Pikes (26 and 29), Fox 34 (basic model), old Lyriks (35mm, beasty), and now 36s (29er, Factory FIT4) and also 32s and Revs… And tbh I’m really not that fussed about stiffness. Everything bar the 140mm 32s was stiff enough for the job. (the 32s were obviously an XC fork stretched too far). So stiffness, ymmv but 34s and Pikes were plenty stiff enough for me.
Performance, I actually really liked the basic 34. It was spikier and a bit less responsive than my Pikes but the basic damping curve was more what I want from a fork and it didn’t have to be filled with volume spacers. The Pike I think had better parts but less good setup (I had to have the compression rolled all the way off, I think maybe it’s just built for bigger people than us? A custom tune would have sorted this I’m sure)
Now on the FIT4 36s and they are superb tbh. They should be at the price. Very nearly as good as my ancient coil Lyrik DHs were.
Sooo what’s the point of all this rambling? Basically they’re all good. I really don’t think you’ll hate any of them. And they’re all pretty upgradable (I was going to stick a coil in my Pikes and tune the damper a bit more) so even if you’re not happy on day one there’s room to grow.