check out the numrk tt 500 i bought mine for sampling and scratchin, but you need a mixer too, im just rocking one cause i just use it for sampling and not mixing but i got the dxm pro mixer and i love it too, i got the "on the floor" copy so it was like 100 bucks less. but then you need an audio interface too, haha i made this purchase about a year ago, im usin a firewire 410 and i love it.
if your just goin direct into your mpc and doin all your chopping there you could probably bypass the 410.
the tt500 has really good torque too esepcially for a turntble in its price range. it has like 5.1 whatever units i dont remmber but i remember that it blew everything else away in that price range.