Well, I never really heard of Navigon before i purchased this 4350 sat nav and having had this device for 4 weeks now i am totally impressed! I "was" a total tomtom user and beleived that no other device on the market could offer anything near the quality or reliability as a tomtom. How wrong i was! I have driven no less than 750 miles with this sat nav and it has got me from door to door without error and in absolute ease. The traffic information is as clear and up to date as you could wish for, every direction and/or warning has proven to be extremely accurate, and i really like the pop up parking signs amongst various other information messages it displays when you enter a town or city. Really informative and well thought. Also the graphics are way crisper and smoother than the big named competitions devices. Well done Navigon, this by far is the most outstanding unit i have used so far.