I had a similar door ding fixed on my '03 E65 with titanium silver, and you can't tell it was repainted, even in bright sunlight. If they blend the paint correctly and re-clearcoat everything, it will look new again. Just make sure they mask everyhting off so you don't get overspary on the rest of the car. Paintless dent repair is great if there is no significant paint damage to fix, but mine had a deep chip in the dent.

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'06 X5 4.8is, TiAg/black, cold weather pkg., comfort seats
'07 750Li, TiAg/black, sport pkg.
'05 Ford F350 silver met./slate gray, Lariat, 6.0 PSD, CC, DRW, FX4