Marlin 60 or Ruger 10/22. The Marlin is a better deal, but the Ruger has the benefit of more aftermarket add-ons. I also like the loading systems of both these guns. The Marlin 60's tube magazine is easy and doesn't stick out below the gun. The Ruger 10/22 is also easy to load (the rotary magazine resistance doesn't increase greatly as you get to the last 2-3 of the 10 rounds) and it doesn't stick out below the gun.
All those other 22's with the single stack mags get old real fast. Try loading a Marlin 795's mag or a Savage's a few times. After about 5 reloads of these mags, your thumb is going to be worn out (if not blistered).
As for the Mossberg Plinkster, well, it just feels extremely cheap. Please, don't make the mistake that thousands of others have! Don't die at the age of 80 and leave your children and grandchildren a bunch of cheap/junky guns!!!!