TomTom Go 6200 World Wi-Fi

Amazon ReviewsScores 4.0 out of 5 from 578 Amazon Reviewers.
The TomTom GO 6200 with Wi-Fi updating supersedes the TomTom Go 6100. This is the smarter, faster, better connected sat nav and includes voice control, smartphone message reading, and easy updating via Wi-Fi. Free lifetime maps, traffic (via inbuilt sim card) and speed camera updates are all included. The 6200 has a 6 inch multi-touch screen, (take a look at the 5200 if you want a slightly smaller screen). The Go 6200 will also learn your habits. For instance, it can predict your destination, so if you regularly commute at a certain time, it will guess at where you are going. This means it will manage everything automatically, including avoiding traffic, from the outset. The inbuilt sim means always connected traffic info worldwide, with no charges, ever.

At a Glance
6" Screen, Lifetime World Maps, WiFi, Blueooth, Built-in Lifetime Digital Traffic
Also consider the the GO PROFESSIONAL version.
The TomTom Go 6200 has now been superseded by the TomTom Go 6200 Professional - which is often sold at a similar price, and has even been known to be cheaper when on promotion.