I personally love the MSport. The fender flares appear to be wider too giving it a more aggressive look (didn't actually measure, just by eye balling with a MSport next to a regular Sport package).

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2008 X5 4.8
White w/ Black Interior w/ Bamboo Trim | Premium | Sports + 214" | Tech | Cold Weather | Rear Climate | Premium Sound | Active Vent Seats | Heads-Up | Comfort Access | 3rd Row | Aero Kit | Huper Optik Tint | Clear Reflectors