There are plenty of complete dud free quizzes out there, but this one's the best. I always returned to this one (sneakily) to verify my own thinking when running strategy workshops - Deb introduced me to the concept of brands using archetypes to stay on track a few years ago. Despite searching for a free tool that could match it, I haven't been able to find one. Unparalleled IMHO, which is why I joined as an 'early adopter' too.
Di Challenor
Whistle Communications