Ever seen those same failures on OEM arms pushed the places SPC arms often are? I have
We have sold, installed and run hundreds of UCA's in DD, trail rig, overland app and race 200's over the past decade now. I don't know that there is a single one that is the 'end-all' solution but I'll say that we have likely seen the same or less issues per number sold with SPC than any other. We stock two brands of bushings, Japanese ball-joints, complete OEM and aftermarket arms (OME and SPC, full disclosure) and have installed TC, Icon and Blackhawk too. We've been fortunate to not have had issues with high failure rates of SPC. OME's new options are very nice and we've had zero issues there beyond supply but we still spec the SPC more often than not due to the ability to cheat everything forward and avoid body mount contact more than any other arm. I've run them quite hard on my own 200 for 100k, we'd love to run them on the Canguro 200 in race conditions as the OEM uppers last about 1 race, sometimes less unfortunately.
We stock the SPC arms, replacement bushings and ball-joint assemblies along with the OEM/Aftermarket bushings, ball joints, etc @ Cruiser Outfitters if we can be of help.