I had a Beretta Minx I couldn't make run, got rid of it. I don't really like the design, no extractor. In mouses, I prefer my revolvers built by NAA. They go bang every time. I carry one as a back up always gun, the .22LR, and I have a .22 mag Black Widow I like for ultra discrete carry when I need it. The .22 mag has quite a bit more pop than a LR, ballistically close to .32ACP, of course not a real powerhouse, but the penetration of the round is plenty adequate and I prefer it to the LR round if I have to settle for such a gun. Too, the Black Widow has real Novak sights, can groups under 4" at 25 yards off the bench which is better than most tiny autos I've tried.
Down side is you need a NY reload if you wanna reload, but hey, a mini revolver in each pocket and you have 10 rounds.
I just bought a new Ruger SR22, fantastic reliability and accuracy, but it's not as tiny as the Berettas. Pretty light, though, at 17 ounces and it will fit in some pockets. I bought it for plinking and to carry when I'm fishing. It will put 5 rounds into 2" at 25 yards off the bench and has nice adjustable sights. It's a far better gun than either of your choices for a plinker IMHO. Yeah, it is a little bigger physically, but it's a lot more accurate. I HAVE been thinkin' of getting one of the Taurus tip ups just because they're so danged cheap at Academy and I collect rimfires to an extent, just like you, I enjoy shootin' 'em. I just got burned on that one Beretta, but I might give the design another chance.
If you don't have a Ruger SR22, though, you should check it out. They're a dandy little pistol.