I have a 2001 4.4 with 100K miles that I have owned since 19K miles. At around 70K the car fell apart, new transmission, waterpump, intake gasket, MAF, etc. After shelling out 6K in repairs it has been very good for 2 years. Over the last week I have had to have some routine stuff done, front end $1,000, front brakes $300, and two new rear tires (damn wife ran over a spike) $750. The only known issue is has is with a leak in the timing cover, which will cost $1800 to repair, so I plan to just live with it. As for buying another one, that is what I plan to do in the fall. I am going to dump my 325CI coupe for a 2006 X5 with low miles. I am going to swap the mods from my 2001 over to the 2006, drive the 2001 through the winter, and then trade it in towards a 2007 M3.