Hello fellow mowers, I bought a john deere 777 with the 27 kawasaki and a 72 deck. It is a tough machine but if you are going to mulch several acres, get the diesel. I have bogged mine down several times to the point of having to remove the mulching kit. It really was nice having all seven acres mulched. no visible clippings. The ztr took a couple hours off mowing time from the J.D. 870 with 72" belly mower I was using. This post is for anyone considering a new purchase. I really am grateful for finding this site before I purchased.