I had a 3940 and have a 2650, both open stations. Unless you need a bit more nimble and a much, much lighter tractor with much much less power, keep that 3940. The 3940 has much nicer controls and features. That said, in the field it was too light and didn't have enough power and in the yard was too heavy and a bit large. The 2650 is a gentleman's farm tractor at best.