Deciding on the size was the easy part but on which one has been real difficult. I am an homeowner upgrading from a 21" toro to a 34" ZTR. Moved to a home with .5 acres and need the extra help due to a bad back. I have a dealer selling the Encore for 3K with a 18hp Briggs. It comes in a 15hp Kawi too and some dealers I spoke to feel that the briggs is a piece of crap. No clue here. The Gravely with 15hp kawi is a used one with just over 50hrs. I will go and demo one t'row. Again demoing a machine for 10 mins in a parking lot is obviously not the irght measure of a mower. hence I am here asking you gentlemen for advice. So what are the major differences? Are they comparable? I think encore has higher ( 19000) blade tip speed. HELP PLEASE!