Before I start I was a passenger on route to work, I am not quite that irresponsible to drive in pouring rain and fiddle with a sat nav
Ok, just had first run of this on way to work and no problems.
Fairly similar set of options to TomTom, very easy and user friendly to scroll through, you can customise the display to show your speed, arrrival time, distance to go, altitude or heading. change the distance before alerts pop up etc.
in the 'my places' section you can set your home location, a work location, your recent trips and then your favourites, pretty much standard.
To plan a route you have the option of picking a point on the map which is pretty quick to scroll around the map.
or you can go to the address page where u can put the post code in etc for note if like my workplace your address is in a postcode but doesnt have a number on the road you can put the post code in and then move around the area to get the correct location which is good.
When a route is planned and you are on your journey you can go to a quick stop option and say you want to go to a petrol station, hotel etc you can add it 'onroute' which is also handy.
the Detour option in the menu also works well as does the weather (although knowing the local weather is a lottle pointless

)
If the sat nav is on and you get a phone call, after the call the copilot opens up straight away and your journey continues, although you do get a mini option screen that seems to pop up and has to be cancelled ( about the only annoying thing I found)
If the sat nav is on and you get a text message the message preview pops up as normal over copilot. If you close it then the journey resumes as normal, if you reply to the message, copilot closes, you loose your currnet journey and you have to put it in again when re-opening the application, not really aproblem as if driving u shouldn't be replying to txt messages and if not driving it only takes 4 clicks to get back to the directions.
The backlight stays lit the whole time sat nav is running and you can set it to auto rotate if the iphone is put on its side.
All in all I am really pleased with it so far, cant see any major issues although havent used every item but I wont really use it any more than today for different journeys.
definately a



from me, works much better than google maps which I always find slow and unreliable if signal not great, I dont get on with paper maps and dont want a seperate sat nav unit in the car
again if anyone thinks of anything and wants me to take a look let me know, more than happy to try things out on it.