get an emu mate , the filters are way nicer than the akai ones in my opinion, e4xt ultra or any of the ultra range or even if you have a pc you could get one of their very impressive new sampling cards :clap:

s5000 and s6000 also decent machines with the usb card (if it works properly, know a few people with problems)

agree on one thing though dont touch an s2000 unless you really have to