I am looking at getting either an audi A4 or A6 estate, both are an S Line, the a4 is 8.5k on 110000k miles and the a6 is 10.5k on 105000k miles. both with full audi service history. so i was just wondering what advice or information on these people might have. what should i look out for when going to look at them. any info or advice would be much apprciated. thanks in advance.