I am studying on getting a Wilson case trimmer. I have the choice of getting case holders for fired brass or for new (resized) brass. Which is the better way to go? I expect the holder for new brass would not be a good idea if cases are only going to be neck-resized.

Not being the trusting sort,I always resize new brass,so I get both. its only what, $5-$6 more?
Jeff

If you only get one of them, get the one for fireformed brass. You can always figure out a way to steady new brass in it, but you won't be able to use the other for fireformed brass, and that's when I do most of my trimming.

remember that the brass will grow in length in the resizing operation and if you trim prior to resizing then you must take this into account.