it all depends by the kind of music u play... the xOne's are made to play minimal & techno music, the filters are made to give the highest performance with these kinds of music..
the pioneer... dunno... never touched one.. i play minimal..
I don't think they're made FOR techno (and minimal which is derivate of techno). The 92 series is developped with the help of techno and also minimal pioneer (not the brand) Richie Hawtin. They're very handy for techno. In my opninion because of the fact that they're very detailled, 4 band EQ, 2 superb filters, excellent faders, ... and I think techno dj's are also very refined and want to have every single thing under their control, every little frequency. I think it's an aspect that techno dj's and the xone series have in common. Many techno dj's use the xone for this reason, (but not all of time like Jeff Mills, Carl Cox, Derrick Mayand Kevin Saunderson to name a few of the biggest who only seldom use a xone).