lee and candt
keep in mind with the arbor press/wilson hand dies, you're usually using collet style dies and only "neck sizing" about 1/4" of the case. and with the wilson dies, you've got to pick the size of the collet you want, and they come in .001" increments, allowing you an extremely precise control over neck tension, but also requiring you to have some clue about how much you want. i.e. it might not be the best choice for someone starting out.
the lee hand press stuff would be more appropriate if you want to full-length resize.
my opinion is that the arbor press/wilson dies are much, much higher quality than anything lee ever made, but it's not really appropriate for every situation. if you're just making blasting ammo, then go with the lee... not because of the expense, but because you're probably full-length resizing.
again, the head on the arbor press, as you can see in the picture, is held in place with essentially a little bit of friction applied by the black lever. if you tried to full-length size a bottleneck brass case that had expanded significantly, the head would probably just slide up and scratch the post. it's no rock chucker