Hi Duane,
They are both great Star reloading tools. The very first Star I purchased was sold as a Progressive and turned out to be a Universal -- if you are to be surprised, this is the best way, but it is better to be informed.
One other issue I should have mentioned is that a Progressive will accept the "OO" powder slides and housing needed to load .357's larger charges of powder. Star reports not making "O" slides so most of the remaining supply is from people with old ones to share or that make their own from blanks, or switch to the "OO" housing and use "OO" slides.
If you would be so kind, could you please photograph your Progressive's Steel Floor Base in a view similar to the one in the picture of my last post? If your camera does not get that close, just send the highest quality you camera will do (largest image size) so that the base is focused clearly. I would like to include your Progressive's base pictured along side a Universal for comparison. If you could send it to the forum admin, I am sure he will add it for us.
Thanks,
Ross