hi carbine is just the smaller of the two so will get more shots from the classic ,
hi have a s410 classic along with quite a few springers and pre-charge rifles
i would however save a bit more cash and buy a full set up , as the add-ons can cost a couple quid also try and get a kit with a bottle as the pumps just don,t work ,of course they will fill you rifle but its hard work ,
and only one gun to focus on would have to be the THEOBEN RAPID 7 best of luck