i would say the fx stirrup pump is the easiest to use and can fill you buddy bottles to 232 BAR.
i would fill them in stages though,say maybe 40 pumps then a rest both for you and the pump,then 40 more etc till its full.
if you try fill a bottle in one go the pump can get really hot and will damage the seals,hence doing it in stages letting it and you cool down between pumps is the way to go.