Thank you all for the tips !.
But i founded a akai MPC 2000 XL for the half of the new price, and taked thise baby home.
It's a good machine for that price, I think if i didn't find this machine, i woud go for the EMU 5000.
It's great for live feel producing.
It has a bit limitations, so maybe i buy a EMU 5000 later.

Thank you again !