I've had my Beretta Bobcat since the mid 1990s. It used to somewhat run on CCI Stingers. It only runs fairly well on CCI round nose Mini-Mags when it wants to. I've had up to 50 to 70 rounds feed in a row on the Beretta using Mini-Mags.
I've only owned the Bersa made Firestorm .22 for about 8 months. After a couple hundred rounds breaking in with Mini-Mags, the Bersa will eat at least 4 other types of ammo very well in my experience.
The Bersa is a better functioning gun and runs well for hundreds of rounds, not just a few magazines like the Beretta. Plus, the Bersa has better sights, a longer sight radius, and fits the hand better due to its size. Takedown is no harder for the Bersa than the Beretta.
It really is simple. If you want a .22 auto for plinking and practice with a lot of rounds fired downrange, pick the Bersa over the Beretta. If you want an Italian branded gun that fits in your pocket and all you're going to do is fire a couple magazines at a time, pick the Beretta.