I was a confirmed spring powered air pistol user until I had the chance to shoot a Crosman 150 which changed my attitude altogether, particularly in .22 calibre pistols.
I now have quite a few from Crosman, Benjamin and Schimel including the S/A versions of the Crosman (600) and Benjamin (422) which are great fun to shoot if not as accurate as the single shot pistols. These pistols are also very economic to run with a single CO2 capsule easily providing an evenings entertainment at the range. I guess the only downside is that they feel a bit lifeless in the hand lacking the recoil characteristics of the springers, but this does help with accuracy.
A bonus for me is the loud crack which often accompanies their use which only adds to the overall experience.
Brian