little help please

[kevgem2]

Hi there, I am looking at buying another audi can any one recommend a vehicle to have a look at please? 

I will be looking at cars around 5,000 to 6,000 mark tops so obviously not a new one lol but will be new to me I was thinking an A6-(C6) or a A4-(B8) evant/estate car, engine not that shore about and with an automatic gear box I am in two minds about diesel or petrol ?

most of the time I am just doing short journeys but come the spring and summer I can be doing a lot of motorway miles and would benefit from a good mpg ?

the criteria, is a estate car that has a good turn of speed when needed, can handle a bendy road and not having to be at the fuel pumps every five minuets lol

looking forward to peoples views ?