Please ONLY post if you have actually Navigon on a 3G. Maybe TomTom on a 3G as well. I'm trying to decide between Navigon ($60) and TomTom-US($50), and I would go for navigon but I've heard so many reports about it being slow, almost unbearably so, on a 3G. How bad is it really? And is TomTom really that much faster?