Ok, that Z series looks like an improvement, the thing I'm really noticing is how when you were scrolling along the map it doesn't lag like hell. Even the lower end models seem to scroll at a reasonable speed, maybe 3-4 fps, whereas my F90BT is like watching a slide show when i try to scroll. Hopefully 3.0 will fix that.
The thing with 3.0 I'm scared about is, won't we lose our ability to hack the unit? That means we'll get locked at about 10 mph again! I must say I also really enjoy customizing the buttons... I guess we'll have to wait and see