cartridge all the time for me too.
cartridge on all my off road bikes since ages ago.. Only bike with C+C is the commuter. Front wheel never have any issues with, but the back always works loose, even when adjusted properly, tightened up using 3 foot adaptors on the cone spanners for extra torque and threadlock..Would stay tight for 2 -3 months then the wobble would come back..reservice etc etc.. Then the races get pitted (the hub is not fecked) but runs with an annoying gritty sound. I have 3 spare XT rearwheels in the garage that have come off my commuter in last 6 years. all with pitted bearing surfaces.
Just whacked on a spare cartridge hubbed rear wheel, and no probs in the last 4 months of truely shite weather….