I'll SECOND THIS, I LOVE my Ruger, MkIII 22/45 !!!!!You absolutely cant go wrong with the Ruger Mark 3s or 22/45s. They are a staple to any gun owners collection. They are so much fun an inexpensive to shoot.
That is my vote!
GSG-1911, 22LR fit and function identical to the 1911. Shoots well, shoots cheap, shoots accurately...