I wouldn't trust the lens in the goggles, but a fine piece of history
The splat pistol, just a toy .50 but fun
(don't shoot anyone wearing the glasses included!)
The zen cylinder should all be good. Check the dates on it, it will be aluminium so realy valid for 10 years from manufacture
Forget the cylinder on the pro am. It will be co2 and old
The pro am is your winner
Clean it up, check seals and see how it runs