The Walther P22 was the piggest POS I have ever owned. Tried multiple mags (even the newer gen mags), every type of ammo I could find, and still couldn't get through a single mag without an issue. It was great for teaching malfunction drills and not much else, I would typically have 2-3 failures per magazine.
It would lock open with a partial magazine left loaded, stovepipe, fail to set the hammer back, fail to pick the next round off of the magazine (empty chamber but loaded mag randomly during firing), and fail to extract, all within a few (6-7) mags.
I think the Phoenix Arms HP22A is twice the gun that the Walther was and I say this knowing about a few issues the Phoenix has. At least it actually functioned.
If you're going to spend the money to get a gun in that price range, go with the Ruger MK series every time.