I use a 3 stage BSA pump, 200bar tubes like AirArms are a doddle But I do have to jump up n down on it to get 230bar into my Wildcat... so I dont, 200bar is enough shots for me to get very bored.
The cheap single action pumps from China... not good, the only way they could be more of a pain in the back-trumpet is if they were inserted there.
Moisture... Having just had my rifles re-sealed, I can report that my S310 and Ultra tubes are corrosion free after 4 and 3 years of pumping respectively.
Though...
I do store my pump in the coldest part of the coldest room in my abode along with my rifles. Wip is QR coupled to the pump - I put the blanking plug in, tighten the bleed, give it a few pumps and open the bleed to get any moisture out. Once pumping, I go half way then crack the bleed then start again, the other reason I dont fully charge the Wildcat is that things start to get Hot past 215ish.
And if I cant be bothered / everything Murphies at once / World Ends?
I got 9 springers to choose from