I'm loooking at buying a DVD GPS playerfor my 2011' Buick Regal. Actually i have went to the shop and have a look about GPS navigation, and the saleman showed me the GPS navi for me, i think it's OK, the products online is much cheaper than the shop, one of my foreign friends introduce a site for me, he bought one and feel very good so far, but there have many products, i don't know which one should i choose. Any useful suggestion would be appreciated.
The link: Buick Regal GPS player