If you do a search, there have been a couple of reviews on the Mini45 including my own. Some differences in how it felt compared to other guns but generally an OK gun to shoot. one factor that seems to be common is hammer bite.
On a side note, I had found that Bersa does indeed import the Bersa Mini Thunder 45 under their own name via RSA along with making the FireStorm Mini for SGS. Surprised me when I saw it at a gun show last weekend.