I have a Yong Heng pump that I have had for about a year. I have had really good luck with mine filling my FX crown directly. Usually takes just a few minutes to get back to 250 bar. I now have a Brocock Bantum in .25. Since you cant remove this bottle, I need a small tank that I can refill the gun in the field with (One Fill back to 250 would be fine with me.) I would like to be able to fill this small tank with my Yong Heng without running it for a long time. I think these pumps will last a long time if you don't run them to the max all the time. Can you guys suggest something that I can use? Thanks for the help!