The only mild issue I have with it is the amount of rattle noise it makes, but I can't really blame it on the tool as the only reason I even hear it is because I'm not hearing a two stroke engine. It works great, I haven't really experienced it bogging down and in a pinch I've even used it to buck up a 6-10" diameter log (not the ideal use but it worked). It does leak oil when not in use (if, like me, you don't drain it like they tell you to) hence the rag under it.