I caught the Thunder bug last year. My dad and I bought 2 thunder plus pistols, sequential serial numbers no less. After reading on the Bersa forum that they liked about 400 rounds of a break in period I wasn't too concerned about ftf's my first trip out. But then again and again, my frustration grew as I struggled to hit that magic 400 round threshold. It never got better... My dad's gun on the other hand ran like a well oiled sewing machine. I contacted Eagle imports and they put me in touch with one of their authorized warranty gun smiths... Off it went... 3 days later he called me to tell me he took it to the range and it ran fine. I explained my woes and he kinda left me feeling a little hopeless. He told me he'd look it over again but wasn't really going to do much. Maybe look at the feed ramp and put a new recoil spring in it. 2 days later it was delivered back to me. 1500-2000 rounds later it hasn't given me a single hiccup. Round nose, flat point, hollow point... Doesn't matter just goes bang. Don't know what he did, But it works flawlessly now. My dad's gun just worked from the get go.
Would I buy another...Yes
Do I leave the house without it...no. It is in my truck or on my person all the time. Are there nicer guns out there? Sure... But an accurate, fun to shoot double stack DA/SA de-cocker almost pocket pistol for under $400 is pretty damn tough to beat IMHO.
As for some of the other responses...
The recoil spring is directional. If you put it in backwards, it makes reassembly infinitely more difficult. Ask me how I know.
The Thunder 9 ultra compact is also a nice pistol. Fully ambidextrous, mag release, slide stop and safety/de cocker. I have not had a single issue with fte or rtf with mine. The only gripe I have is the finish isn't great. It's the blued variety and the nickel finish on my 380 is way nicer.
Both Bersas have a really nice trigger and are a joy to shoot. I'll give the edge to the 380 just because I think it's a touch more accurate. It's not a problem to go run 100 or so rounds through either and wish you had brought more ammo to burn... Maybe it's just me, but by the looks a.c. something like a Ruger LCP I think the fun would be over after about 15 rounds.