depends on what you want to do (i'm assuming sample based beats hip-hop judging by your sig). the machine is basically the same as the regular sp-404 which i have, and really love. the sp series are not cheap mpcs. they are completely different machines with a completely different workflow. in fact they are rather limited. but you can really freak them if you know how to work.
they are not really the most versatile but they are good at what they do, which is quickly and intuitively building and arranging loops.