Just my two cents, but I've got a TC21D, and it couldn't be better to mow my 3 acres. The only things to think about are overhead clearance (Trees, and such), and how much stuff you need to mow around. I have a MMM, and I can get pretty close to everything with it. I do have some smaller trees on the property , that I most trim under. I couldn't get under them right with my Wheelhorse either. As far as the BX goes, that may be an option to think about. They are a bit smaller, and may make it easier to use in your yard. My problem with the zero turn mowers, is all you have there is a mower. That's fine if all you want to do is mow grass, but I found all kind of uses for my Compact. And the FEL is a back saver. Good Luck. Kent