TomTom One XL

Pros: Bigger Screen, Speaker is loud and Clear, Does not Lag, Rerouting is fast

Cons: Bluetooth can't be used for hands-free, Traffic not currently availble for US

Summary: I returned my Magellan 3100 because the nav position kept lagging, and the rerouting was atrocious so I got the TOMTOM One XL. Just to clarify Im a noobi at this GPS stuff. Comparing the TOMTOM to the Magellan 3100. The tomtom works awesome, its ready to use out of the box, comes preloaded with US and Canada maps, the screen is bigger, it never lagged, its very fast at rerouting. Touch screen works great. Map zooms in and out automatically when needed while going to your route.
The only dissappointing thing I have to mention is that it does NOT have handsfree bluetooth, otherwise it would have been a perfect 10.
Im debating if I should exchange it for a Garmin 580 which has handsfree. But its hard to give up because the TOMTOM ONE XL just works so well.