Z1 is very cool. Nice with ipad/iphone to have some "consumer" experience Z1 could be great to use with Traktor Pro..But in "real" world NI should ADD flexible beatgrid in traktor to allow to work normally. Also Z1 + X1 (and F1) could be real amazing combination... But Sync in Traktor is not enough (and all of us know this). For unstable tempo..we need or pitch (with good resolution..aka NO midi) or good flexible Beatgrid..otherwise we are talking about toy and not Pro stuff. Just my 2 cent.