The hornaday single stage press also has the same bushing system to put on the dies like the their progressive press does. It does cut down on the setup time after the first time. Its a quick 1/4ish turn to install and remove. For me, that makes the bushing system worth it even with the added cost of getting the extra bushing for every single die that you use. More information to think about and Lee has something in concept also like the Hornady.
As a noob, that sold the thing for me, consistency in all steps because it goes back in the after it was set up. IE set and forget it, unless you want to make a change.