I really like the max675vdII, and from what I've seen it actually costs about the same as the z2, maybe a little more because of the separate nav unit. But the the only thing that makes me still like the z2 better is that it can rip music.
I love all the features of the z2, I just hate the GUI.
On a side note: You guys do realize that you're cussing each other out on the internet over your opinions on which nav unit I might like better, right? I appreciate all the help and advice, but no need to start a pissing contest.