Sadly they aren't straight ports though, i've experienced the TomTom on a friends iPhone and it was appalling... the Navigon and CoPilot applications seemed a lot stronger - hence wanting some clarification if possible.
Having used CoPilot before, i was also impressed so may go with that anyway - seen as it's the cheapest anyway!!
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@Paw
Sadly they aren't straight ports though, i've experienced the TomTom on a friends iPhone and it was appalling... the Navigon and CoPilot applications seemed a lot stronger - hence wanting some clarification if possible.
Having used CoPilot before, i was also impressed so may go with that anyway - seen as it's the cheapest anyway!!