Aftermarket BMW Sat-Nav discs

[Phil-E30]

Just wanted to get a few opinions on options to upgrade the Sat Nav maps.

The BMW prices are ridiculous. Sellers on eBay are offering the upgraded map discs and firmware, for less than £20. I assume this is ok? I can't really see how there would be any issues compared to those produced by BMW.

What do you guys use?

Thanks

 

[Chris_D]

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[Muckinonthesofa]

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[Wondermike]

Guys please don't discuss non-official updates, thanks.