Happy New Year all!
Thank you for the input pre-Christmas, all very useful and gave food for thought.
In the end I decided against the whole S6 plan, on my budget the ones I looked at were too much of a compromise and I couldn't stretch to the required amount of money. I did take an A6 out for a run around and it was a nice car, it just wasn't what I was looking for. I decided to have a look at the S4, a little smaller but comparable to the car that I was in.
Anyway, short story, having taken a number out and really enjoying the experience I pushed the button on this.....
So far really pleased and is a really enjoyable motor! :)