Dirtboy, you have certainly done some research. I would also agree with most here about the 4610. The clear advantages over the 4410 are the loader which is a considerable one. I would take the greater loader even over the greater HP. Having a greater lift height is also huge and something you run out of quickly. The eHydro would be a great addition. Someone mentioned liking the gear simply because they like to throttle the loader. I find running the loader on my tractor which is hydro works great at about 2000 RPM, theres plenty of power and the speed of the loader is great. It's also quiet at that speed. I consider it a non issue. I use both routinely. Using medium range gives you everything you need and the shifting from 2nd to go into the pile and then to 4th to move the load is eliminated. While the debate between hydro and a manual/shuttle comes up every now and then, I find that both are very effective and there are times when a shuttle tractor would be preferable. I love how smooth, quiet and the control I have with my new HST tractor.
I checked into the 4310 and 4410 prior to my tractor purchase. If I was deciding between the 4410 and the 4610, I would be pushing the 4610. Thats saying a lot because the 4410 is excellent also. In fact, if the 460 loader was available for it, that's the way I'd go. Save up for the 4610 and 460 loader. The extra few thousand dollars will seem small after a few years time. Rat.