Ralph Whitsitt 
2006 BMW X5 SUV 3.0i 4dr SUV AWD (3.0L 6cyl 6M)
No regrets so far...
 Got a great deal on an '06 X5 and took the plunge purchasing my first BMW. It's amazing how smooth and quiet the vehicle is at highway speeds compared to the Ford Explorer and Jeep Cherokee I owned previously. Granted, the tires probably have a lot to do with that, but engine and wind noise are way lower too. Love the grunt that the 3.0 inline six delivers--it loves to rev!!  I was a little concerned about the gas mileage, but it's been a big improvement over the Explorer, getting 23 or 24 mpg for pure highway driving. Premium unleaded can get a bit expensive when prices are up and synthetic oil drives up the cost of oil changes, but so far I'm dealing with it and loving the way it drives!