I can see where Yo-Yo is coming from with Sony throwing-in Andriod to keep up with the Job's hype victims, there's some truth in that.... but as you say Sony is following the Walkman route, afterall this is first & foremost a music player and a pretty impressive one at that.... I'm not impressed with the touch-screen but only because I have large'ish fingers but I'm getting there with more error than trial which could of really put me off of this DAP but.... the sound of this with no enhancements is simply stunning.... I've got to get used to the screen before I attempt any form of minor adjustment, that said, I'm happy with it as it is, a first for a player for me..... I'd love to see Sony bring out DAP like this but as a truly dedicated music player, I like the size of the WM-Z though a few more physical buttons wouldn't go a miss (I like the size of the screen).
Seeing as you've done a lot of listening to the WM-Z perhaps when you get the iB you could give us a proper comparison music wise with regard to SQ.... 'Lover' has tweaked my interest in that DAP so it could be on a future upgrade list..... that said, you could always get rid of the wife and buy both, think about it.... a threesome, twice the pleasure, twice the fun.