Anyone have experience with this GPS

[BulldogSRT]

This looked like a decent navigation option in lue of swapping out the whole head unit (and not messing with my warranty). Anyone have any first hand knowledge or experience with this unit??

link to Ebay:
http://cgi.ebay.com/ebaymotors/mazd...cbQQitemZ180347809227QQptZCarQ5fAudioQ5fVideo

Thanks,
BulldogSRT