Hugh,
As we discussed, I have had the JD 4n1 bucket on my 4000 series. It is very nice. I did not like the bucket actuation quite as much as my nieghbor's Long bucket on his 4320. They seemed to be built about the same. The Long bucket is a smidge more pricey, but not by a lot. The long bucket has its trade off's as well, mainly in that the hydrualic apparatus to actuate the toggle and lines run to a remote cylinder mounted just off the right loader arm. It looks a little unfinished and busy to me, but works fine. My tractor had the third scv lever that allowed you to open/close the loader and the joystick did everything else; th Long bucket can have all functions through the joystick and toggle, which is a slicker setup. In short, there is not too much difference between them, but I would give a slight edge to the Long bucket, for the reasons noted.
John M