If your tractor driving is as much for enjoyment as it is about getting work done, you will be very happy with a 4310. The load match function on the hydro is a great equilizer and the tractor will perform just as well as a 4410 in most situations. However, if you use the tractor to make money or want to get things done in a hurry, I really think you would be glad you paid the extra for the additional HP. You can really tell a difference between the two tractors when traveling in road gear, driving up steep hills, or mowing in heavy grass. When you are in the 25 or so HP range a few more HP makes a difference. On the other hand, I find it more difficult to tell the difference in performance between a 4610 and 4710.