Just as added input, I still have the stock unit and it is working great. I only have CDR's in it and have never had a problem. While I have gone over some serious curbs and medians, I have not gone 4X4 ing. As a replacement head unit I highly recommend Eclipse and Alpine. The reason being is that they have very quick MP3 access while Pioneer, Sony and Panasonic seem to be slower. The new models might be faster so by all means check out Pioneer. They have what I believe to be the best looking with the most features for less cash.