they are both 02 with less than 3k miles. both have almost new tracks. 800 picked 440 not but 440x has high compression pistons and heads. has been clutched and has risers. the 800 is brand new track low miles rer...etc. I already have a 2000 mxz700 stock but i think i need another one so maybe you can help me decide. i know the 440 will smoke a lot of sleds up to 60 but how bad would it really smoke a 800 twin with a picked track. also is the 800 twin really more than the 700 i have . i am curious to find out. let me know what you think. i do mostly trail riding but some lake runs so its a tough call.