I had one of the 2000's a few years ago. It worked every time I pulled the trigger and was lightweight. I can't comment about the newer versions. I liked mine well enough, but after owning it about a year ran across a used Benelli M-1 at a very good price. I kept both guns for about another year. I still had no complaints about the Stoeger. It wasn't finished as well as the Benelli, but was a lot less expensive if both had been purchased new. As it was I didn't have much more money tied up in the Benelli. After a year I just couldn't justify keeping both and was able to sell the Stoeger at a profit.
They use the same inertia system, but there are some differences. They don't operate exactly the same.