get the 4.8, OR 4.6 for that matter since they can be had for less money. I'm a former M3 owner and the X5 is a great compromise between fun, styling, and utility. It will never replace the driving experience the M3 offered but for now I'm very happy with it. O just a tip, get a flashy color it makes it that much more fun. :-)

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2000 Ferrari 360
2003 X5 4.6is
2004 Yamaha R1

1998 740iL (Sold)
1995 M3 (Sold)