The Yanmar YM2610 is basically the YM2500 with the Power-Shift. Everything else is the same. With that said, the YM2500 is the identical twin brother to the John Deere 850. I loved my John Deere 850, but it had issues from the start. Looking around for a replacement was not easy. Not until I found Fredricks Equipment in AL. They take the Japan Yanmar\'s and do total restoration. Not just slapping paint on the body. The engine is rebuilt and dyno tested too. All-in-all, I\'m very pleased.