I personally would save yourself some money and just go aftermarket. Sure, you can spend more by getting the latest and greatest unit out there but you can also save yourself plenty by going with a not so new model. Either way you will end up with a better system than factory and have more options as far as what you want do with it or connect to it. I almost went with the Z1 but having never had a full time NAV wasn't sure how much I would use it. By going with the D1 I got a better system than the OEM and saved myself over $1K. Of course, after a few more months I may find myself looking at the Z1 again
Not sure if this helps you in any way but just my $0.02

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I don't care about the "Jeep thing"

as long as my mail is on time!!!
Slate Blue H3 Adventure w/sunroof, Monsoon/NAV, DVD and marker lights