Divers bottle every time,there are no advantages in using a stirrup pump.Pumps are hard work,dirty unless filters are changed regularly,and with the build up of heat cause condensation in the guns cylinder which is VERY BAD!Divers bottle is clean,quick,and easy,and only costs a couple of quid to have refilled.
Thanks for that Bill I have priced up some second hand bottles at the local Dive shop Will be going that route