I "had" a Bersa Thunder 9/UC. It was an excellent pistol. I had too many 9's and let it go, but not because it wasn't a very good firearm
I have a Firestorm FS22. One of the better rimfire pistols I've ever owned. Excellent reliability, very accurate, fun shooter.
Reasonable price, lifetime warranty...
You won't be disappointed with a Bersa/Firestorm.
P.S. My understanding is that the only Bersa pistols that were ever "iffy" were the 1911 style 45cal Bersa's made by Llama in Spain. These pistols are no longer made, and I believe all of the B/F offerings are now made in-house in Argentina.