Just come from zees, 160R, 180F 26″ wheels to 160R 183F (just changed to 183R 203F) tech 3 X2s on a 29er.
The X2s work just fine, on steep descents with 160mm rotor on the rear definitely notice lack of bite by the bottom so bumped up the rotor size.
They do have a nice feel, more solid, but i put this down to less power generating less sponge in the system. I imagine modulation wouldn’t be there if they had the power of the zees, but since they are less powerful they modulate quite nicely.
They’re nice brakes, more tarty than a shimano, don’t reckon they work any better, just different.
Up to yourself if you fancy paying more than deore price (slx/xt are pretty pointless IMO), want more power, zee.