I own a couple of both the new and the older/original versions.
Both are really nice. The multi-caliber feature is nice and is a bit more "future proof", if you decide to go from a .30 cal to a 6mm and don't want to buy breaks, you can just swap out the insert. Not a necessity by any means, but I do think it's a nice and clever feature.
Performance is identical from what I can tell from the new and old version, you should be happy with it.