My ex-demo GT has the Dynaudio system. It has a very annoying habit - if I set the audio profile to one of the Dynaudio settings the system re-sets to 'individual' everytime I turn off and re-start. Does any one else with Dynaudio have that issue? And the info bit - you dont get a spare wheel with the system, just an aerosol. It is brilliant though, even my self-confessed cloth-eared wife says so.