I'm considering purchasing a used 2001-2002 Audi A4 1.8/3.0. I really don't know much about Audi's and I have some questions. Whats the quality/reliability like compared to Lexus, Infiniti, or Honda? Are there any specific problems to the 1.8 or 3.0 models? Pricewise, there's only about a $2000-$3000 difference between the 2 models. Which would you guys prefer? I want a 5spd if that makes a difference.