I'll only have time to do one of these while passing through Stuttgart. I've been to the MB museum about 10 years ago and remember it fondly, very very well done but never the Porsche museum. I'll be with my fiance who is not really interested in cars but being a good sport and willing to do "the better one."
Has anyone been to both to comment? Is the Porsche museum on the same level as the MB? I personally didn't find the BMW one that great, having seen the MB one a few days previous.