I can confirm that the £2274 is the cost for the entire job- which includes £20 for the operators manual
So far I've just used the car for a 50miles trip from the dealer to home so first reports based on that experience, I may go and have a read of my manual and press a few more buttons to get to learn the new system, the tech was quite honest and said a lot of it was new to them also, so they were finding their way around it.
Upon entry to the car and powering up the system it had already located my phone, the previous system for whatever reason would not sync, this had done so quickly and painlessly and took the contacts into its directory.
I was shown around the system with us both learning together- I was assisted in turning the overspeed warning off, it can get quite annoying apparently
I found the layout quite easy to follow, it does take a few seconds for the different things to start up- the radio included, the sat-nav did take quite a while.
The radio was a joy to use and similar to an ipad music folder you simply flicked across the radio stations it had found locally, luckily all BBC radio stations were shown, so it was a simple case to press and hold in my favourites button, the radio stayed tuned and strongly connected all the way home, the sound seemed much richer with more bass but that may simply be a tuning setup.
I made a telephone call to the wife (obviously at an inconvenient time, as she wasn't too amused when I came out with an 80's saying of 'I'm calling from the car'

I was travelling at McLaren motorway speeds and she said she could hear my clearly, I could certainly hear her!!
It was only a brief call but the sound was constant and non of the crackling from the previous incarnation.
Music player from the phone work instantly over the Bluetooth and you can operate from both the phone and the IRIS panel. I only played one track before going to the radio.
The satnav did seem quite obvious in its operation, and whilst its a couple of screen presses to enter the address page, it is so easily laid out for entering address apart from possibly the buttons do go very close to the edge of the panel and those to the right are a little more awkward to press correctly.
Information on the screen is astounding, it even told me the incline of the hill

my route was via a couple of motorways and lined up across the top of the screen is a list of the blue motorway signs in order that they are needed- M5, M42, M6.
The layout of the screen is excellent and uses the portrait layout wonderfully with you (the cursor) towards the bottom of the screen with the roads ahead clearly displayed.- you've seen the pictures.
I did divert from my route and it was quite quick- (before the next junction) to have found the alternative route. Petrol stations and other POI were shown on the map but I'd guess these are available or not via the settings.
I'm not sure if my TTom does it, but it counts down to the next junction/turn you need to do in time as well as miles.
The hardest thing of the satnav was cancelling the route- which is a couple of presses via the button and setting
The screen touch is lovely for those used to a Ipad etc, then you'll like the feel, the icons are clear and are the ones most of us are now used to.
I'm going to have a press of a few more buttons after have a man read of the manual this evening
I've not ventured into any of the other features as yet, as these mentioned were the important ones for me to get the best out of the car.
This is all IMHO and from the drive home
