Guys after much thinking and negotiating, I have ordered my S3 Saloon!
Also big thanks to advice on discounts. I used car wow and used a good quote from there to negotiate 5% from Cambridge audi. They said before I started that they had given no discount at all on all the S3's they had sold so far, but after some discussion and showing them what kings Lynn were offering they went off for 20 mins and came back with an offer! So pleased
That's more or less what I did with my saloon, but added about £200 to one of the quotes I received through carwow and the salesman came back with an offer that matched it straight away....