Okay, the 650 is a bit dated, I got mine at an auction so it had already had its share of bumps and bruises, but a tractor that gets the job done is a tractor that is worth having.
For a good thirteen years now, this little machine has been getting the job done for me. "The job", first and foremost, is snow removal. The 59 inch front-mount snowblower may be a bit too much for the twin-cylinder 19 HP diesel but it has moved a lot of Northern Michigan snow out of my way.
I live in the woods so a plow is not all that useful but I can blow snow into the woods. Sometimes even first gear is too fast if the accumulation is heavy and deep. In that situation I have to inch forward, then hit the clutch and let the blower clear itself. It's slow going in those conditions. It will easily chew through a 18 inches of powder in second gear.
I also have the belly mower and a third-party back blade, both of which have seen their share of use. All in all, this was one of the better purchases I have made.