They’re quality is a shit. I bought a wave+, broke within a couple months (spring in pliers broke making pliers unusable). Send it back and they say it’s not repairable so they give me a different one (mine was laser engraved). Then the replacement breaks (spring that holds pocket clip in place). I don’t even use the Leatherman that much.
I haven’t had any problems with them but I have older ones and the only service I had done was on my partner’s Wingman, which has been going strong for years. Just got a Wave+ for a family member though, so I guess we’ll see how it goes.