Had the tranny fluid and filter changed for a '05 X3 with 59,XXX miles at the Stealership ($350.) Service was done at the dealership so I wasn't able to see the drain pan or the condition of the fluid....
The difference afterward was not that really noticeable. However, I am planning on keeping this car in the family for a while so I am going to service the other tranny related fluids too.

Got the 3 Litres of Redline diff fluid and a litre of the BMW transaxle fluid from Bavauto. Will post the results from my appoinment with my Indy soon.