Satnav advice wanted

I was wondering what people thought about satnav apps for iOS. I've seen: TomTom, CoPilot and Navigon. Part of me wants to stick with TomTom, although far more expensive it's got the name behind it. It'll mainly be for travelling on the A1 and M1. youtellme90, Forum user
/ use a standard TomTom satnav and supplement it with a some iPhone apps to alert me to traFFic updates. The Free RAC TraFfic app is particularly good, and I sometimes also use the Highways Agency app to check For planned roadworks, which may not be causing congestion right now, but may do so when you get there. Alan Audio, Forum user

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