I recently picked up a 5M John Deere tractor (specifically the 5085M, but they are referred to the 5M series).
It's the top of the line in the 5 series that John Deere offers. I took a few pics of it pitted against the 5M. The 5M would most certainly take it in top speed, but in a tug of war or off-road, I'm pretty sure the 5M would have the upper hand.
I could in fact pick up the M5 with it if I wanted like I did this poor Saab.
If you're looking for a medium sized utility tractor for work around your property, I highly recommend the JD 5M series. It got all the creature comforts if a nice sedan like the 5 series!
It is almost as fun driving around as the M5, almost...
Makes me wonder what an M5 painted JD Green with Yellow wheels would look like... probably be mistaken for an Oregon Ducks fan, but it may actually look...unique (for lack of better words).
That is one sweet tractor you have there. I have been look at tractors alot lately and JD are best. Enjoy that one looks like you are going to have alot of fun.