I know that this has been picked to death but searching for this information is a nightmare. I am a seasoned rider but have been out of the game for a few years while i went back to school. Looking to get back into the sport but am so out of touch with the what has been going on since about 2013. Are the 800's in the Axys better than the 800 in the Pro? What is wrong with the 850? Really what I am looking for is the year model that i can re-valve shocks, add a pipe and can, and re-cluch and does not require a tone of $$$$ to keep the engine from exploding and make it handle the way it should have from the factory. We all know that there are year models with engine reliability issues so what year were they fixed? I am okay with building over time and willing to do improvements eventually like replacing weak A-arms with stronger parts but just don't want a machine that i have to put thousands into it just to make it a legitimate machine. Thanks all for the help in advance..