If you are going to change just one thing, change the filter and not the oil. Oil (and filters) have come a long way since high school shop class. New washer on the drain plug, new O-ring on the filter cap.

Lots of threads on extraction devices, do a search. Yes, they work. Disposing of the oil and cleaning out the tank is too much of a hassle for many of us; I won't use one if I can get to a drain plug. You need one that holds 8-9 litres. Don't know why you would get oil on yourself using the drain plug, unless you were lying directly underneath it. Just use a shallow 20 litre pan, and you likely don't need to lift the vehicle.

__________________
2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue