I'll second Nik's recommendation. I had a 6' full sized rake on my BX 2200, and although the tractor actually got work done well with it, the overall size of the unit was cumbersome. I traded it on a Woods Estate series and am much more satisfied. When I was looking, I found prices between the KK and the Woods to be very close (in my area), but the Woods was a much nicer unit.
Will