I am lookin into purchasing a Metro 26" in the next few days. How do they do with leaves? Is the 6 hp kaw enough power? If the unit I am buying(from an Exmark dealer) needs the updates(I believe it is an '06), is it a time consuming process and does it cost$. The mower has been used to cut once, but will come with some type of warranty. Any opinions on this mower are appreciated. Thank you.