it is about the workflow and that it feels more like a multi instrument then anything else... if you 'seek' that or not, you have to decide,
try to get your hands on one for a while, a friend or shop, i played in a shop around and got instantly and badly hooked
p.s. and it makes a wicked midi controller for tons of audio softwares, it became the heart of everything i use via the computer now... ALL my existing audio softwares, Live8, Logic8, Traktor Pro, etc...
and don't be lazy and read the 25 pages!!!
GAFM ***