Sure its a fine machine , aint no GS though by all accounts - all earlier models are from the same family , each seems to have progressed the GS unit in varying degrees. This is an all new machine and not from the same family, and apart from the problems that one can get from time to time with a completely new bike and depending on whether you have had your trip or adventure spoiled , ones attitude differs according to ones experience - reading about it is definitely less stressfull than having the experience !
I would consider a new GS - I have test driven it and if I want a new BMW Bike , I may well buy one , but not to continue the GS family , but as a NEW Model and a non GS despite what BMW keep telling me and showing me in their brochures. I know as we all do thanks to this site that they are being misleading.
Aside from that congratulations on your good fortune in winning a very fine machine - enjoy it