You could get a z2 refurb for 1050ish... refurbed z1 for 750 or so... Not a bad price, but not the deal of the century.
I have a D3 and love the hell out of it. Make sure you override the parking brake stuff ;) (My D3 thinks my car is at all times parked with the ebrake on, works much nicer that way, not for sure you can override on the z1, but if you can't, I wouldn't buy it. You'd have to pull over everytime you input anything or change playlists on your ipod etc.)
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