I have always run and loved Exmark mowers. Unfortunately, my dealer who goes to the extreme to take care of us, no longer deals in the Exmark brand. He has two spectacular deals on demos, a Toro 555, and 587 liquid cooled, both have 60-inch decks respectively.The dealer in-addition has a good deal on the john Deere 757 60-inch deck,25 horse air cooled horizontal shaft Kawasaki. We demoed both Toro and the Deere, and in our cool season turf conditions, both mowers cut quality was exceptional. My first impression was the Deere cut quality was clearly better then the Toro, until we checked and adjusted the deck pitch, the dealer setup the Toro with negative deck pitch! My inquiry is to owners running the Toro 500 series or the Deere 757.How are your machines holding up mechanically. Any nagging annoyance problems? How does the stamped deck of the Deere hold up?