I would definitely go with the Alpine Units. I have had them in 10 different vehicles of mine over the past 8 years and have to say they are hand down the best. They do the highest quality and the newest technology. As long as price isn't an issue, they have no competition. Go to
www.alpine1.com to see the IVA-D901 and NVE-582A multimedia controller and nav unit respectively. I can assure you that you won't regret the decision!!
D.Wiggs