What a good read I must say... but for me, having the Dynaudio speakers was not an option because as Adrian had said in his earlier post that the ambient sound in any car will affect the experience of the sounds coming out of any system in a car i.e. road noise, engine noise, rattles and etc. If it is a toss between upgrading the sound components or updrading to xenons, leather chairs in a car, IMO will ultimately depend on the type of car as well as the sound proofing it has... For the GTI, I feel the point is to hear the engine growl as well as to experience the feel of whizzing down the road with road noises etc. Plus to have a drivers' engagement in shifting gears when one hears revs reaching the peak... ahhhhhh so in conclusion, I feel the standard system is more than adequate...
HM