We've had this discussion recently somewhere else.....can't seem to see clearly through the fog though.
I like .22s where the front and rear sights are fixed in relationship to the barrel. Just seems to be inherently more accurate than having them bounce all over the place, mounted on the slide.
That said, the Ruger MK series (I have a MK I) and the Browning Buckmark would be my value choices.
If you want one that looks like a typical polymer handgun then there's Walther P22. And for wow factor at the range, look at the SP22 line. Space age looking. Sorry don't own either, but do like Walther in general.
Of course if you want revolver then the field is wide open.
Get a couple of each.