I have run a JCB 8250 and now own a Fendt 930.  Unless you have and excellent JCB dealer close by, I would highly recommend a Fendt.  As far as road speed, the Fendt will soon have a 60k road speed, 39 mph, in the US if all things fall into place.  They already have it in Europe.  The JCB has a 65k road speed, 42mph.  The Fendt is an excellent all around tractor and will do hauling every bit as good as the JCB and will excel in fieldwork.  The 8250 still lacks in fieldwork and doesn't pull like a 250 hp+ tractor should.  Neighbor has 3 8250's and every one has been back to the dealer for major service work.  He also found out first-hand that the hydraulic system doesn't have near the output a tractor that size should.  A friend of mine in the midwest had a bunch of Fendt's and 3 8250's.  He says the 8250's aren't very dependable and the Fendt's just run.  Feel free to post or email me with any questions on either tractor.