Considering an A5 3 litre Tdi

[Walter Sobchak]

I'm considering changing from a Range Rover to an A5, I've always quite liked the look of the A5 but just wondered what they're like to live with, I've driven one and was very impressed with how fast it was and the economy too, but only had it for a day.
Main questions are, is there anything to look out for on them particularly?, my budget would be £15k-£16k and there seems to be a fair amount of choice, only thing I've noticed is most of them are Sports, how do they differ from the S Line?, as visually they look the same to me. One thing I like is how modern they still feel inside, I'd want to go for one with Nav,Bluetooth etc and auto is a must, I'm not sure if they use an auto box or a dual clutch setup though?.
Also I wanted to know is the 4wd system in it Haldex or a proper Quattro system?.
Thanks in advance for your help.