I just found a good number of threads with people reporting success, even long term success, with inexpensive hand pumps off ebay/amazon. If this is a possibility, and I don't necessarily need to budget for something like a Hill Mark 4 pump, I could look a little higher in price for the rifle.
I have had both, here is my info.-Flash pup .22cal.- Great little light pup. Extremely and surprisingly accurate. Can easily adjust the HSt for optima performance and I got 40 shots per fill. Would be easy to pump with such small air cyl. Trigger needs some tender loving care and can be adjusted. Urban- Decent accuracy. Shoulders very well. trigger will need a mod done to it. HST can easily be adjusted. Have mine set at 750fps for 50 shots. Magazines are pricey. I did find them on amazon for $35. If I would have to pick between these 2 it would be the Flash.