Considering Im the type to always want the latest and greatest, meaning I'm not against upgrading, I could personally care less about stock navi. With the wide choice in the aftermarket, more times than not an aftermarket setup will perform much better, more options and all with great integration. My AVIC does more than any stock BMW navi system can do, and for 1/3 of what I've seen people pay on www.bimmernav.com to upgrade to a stock navi type setup. For the stock diehards, they've already made up their minds...but I know what I would do. Every one of my cars has a different stereo in it, getting rid of the stock stuff almost instantly because it means better sound quality, adaptability, etc right out of the box. Even the stock speakers in the M5 and X5 sound far better running off a different deck...the 7 I completely rewired and replaced all 14 speakers with MB Quarts.

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