I happen to like my Pro-1000; it works for me. A lot of people have less positive experiences. This shell plate converts the Pro-1000 to .45ACP from whatever other caliber you were loading. You may need a different cartridge feeder and primer tray, depending on what your configuration is currently.
Pros: Fits cartridges well
Cons: It's for a Pro-1000
This review was written in the old system and had content requirements that are different than reviews written today.