Hey guys, thinkin about a walker or a hustler z with a bac-vac setup. Any pros or cons? Let me know what you think as I want a machine that can do both large 2 acre plus and small lawns. I already have a 52" walk behind for hills. How does the walker up-speed kit work too? Any problems with it. Also, on the bac-vac for the husler, how well does it work and hold up picking up leaves? Let me know your thoughts.