I like my Glocks, but for rimfire semiauto, I've got a Ruger MK IV 22/45.

I had a MKII 22/45 Competition Target Model for many years (6 7/8" slab side bbl), but recently let it go in favor of this handier size and simplified field-stripping of the 5.5" MK IV. Also , being a lefty, the ambi-safety on the MK IV doesn't make me mad.

[Linked Image from i.imgur.com]