The Walthers don't have nearly the same complaints as years ago. They are Umarex affiliated too. (All Walter 22's are regardless of model or style)
The Ruger SR22 is nearly the same exact thing as the Walther in design, but made of better materials. But the pesky takedown lever has been a source of failure which renders the gun useless.
The one Walther I shot ran perfect, but admittedly, I bought the Ruger based on bad reports of the Walthers.
I later sold the Ruger but it was gun and very reliable gun. Zero failures.... but the take down lever looked like it was showing evidence of getting beat at a faster rate than I would expect.
Another to look at is the Bersa 22. I kept that one when I sold the Ruger. Built on the Bersa 380 frame and all metal, its a stout gun with PPK/s styling which appeals to me.
It also has a better single action trigger than the Ruger but the DA trigger was a little heavier. I forgot which had the bigger/better sights... Ive written about the comparison before if you do a search.
The M&Ps get pretty good reviews despite the Umarex affiliation.
And of course, you cant argue with the BuckMark or Ruger Mk series. You can get then in 4" barrel models which brings the size own considerably but they are much heftier gun than all the others.
That Beretta is super cool but cost, mags, and support would be a concern to me.