I researched for months and finally read Consumer reports list that rated e 350 very high. I needed Bluetooth and waited for the release of this unit. I got for Great price. It is very easy to use. As a contractor in So Cal, it has become an asset to me. Some features that caught me by surprise is the ability to type in the name of the business and it will find it and even give you a phone number. The technology isn't perfect but so far I have only had one business not show up while I request it. It was very easy to set up and is very much Plug and Play. The only weakness so far is the Bluetooth. Everyone hears me fine but I struggle to hear them while driving, I don't like that but it is only a slight problem. All in all I am very pleased and highly recommend this unit. If you don't need Bluetooth then get the 350, it is the same unit minus the Bluetooth, and save some more money.