I have a buddy who is selling a very cherry one and I am seriously considering buying it. However, I have owned VWs and know that when you get a lemon you are in for all kinds of very expensive very elusive electrical gremlins. Do the early S4s have any of these problems? Are there any outstanding long term problems? Any common issues (like electronics) that I should be aware of? What is the general consensus on the longevity and reliability of the early S4s?