Wow, that is impressively large.
I like black sapote and it has been really easy to grow for me. I am interested is a grafted type as my seedling is nice but I think the fruit quality could be better. I hadn't really looked much into what is available and I have no idea how hard they are to graft.
Since reading this thread I checked Lara Farms site, they have four types listed: Bernicker, Oblong, Rieneke/Merida, and Wilson. Anyone know anything about these? I am hesitant to order one in the middle of winter, might as well wait 'til spring but I hope they aren't out of stock then.