FutureDecks is getting better now that iTunes-integration is there, but there's still room for improvement: bpm-detection is incorrect most of the time ("Only you" by Yazoo on 140 bpm???), still no proper help file, and some of its sound-effects don't do anything (Phase, Reverb, Echo), whereas others sound really quirky (Autopan, Flanger, Delay). It would also be nice if Automix-Function wouldn't sync bpm automatically...
But the one thing that makes FutureDecks indispensable is its ability to record one's mixes.
As the guys at Xylio seem to pay attention to their customers, I'm having great hopes for the future.