Quite an interesting read this thread, some of the replies I mean.
If you ask me though, life's to short so enjoy the fruits of your labour and then move on.
For me, longest owned was only about 2years I think. Been Nova free for nearly 5 years & certainly never looked back if Im honest.
EDIT: And with the continuing dropping prices of modern day used performance cars (RS4's, 911T's, M5's) I doubt Id ever go back aswell