Over the past 25 years I've owned (most from new) 2 BMW coupes, VW Corrado, Golf Vr6,Passat CC, Audi TT Mk1 & 2 , Mercedes SLK , W203 W205 & 2 C207 coupes , not in this order and I can't honestly say I regretted moving between marques as generally different types of car. You can't really compare moving from an Audi TT to a Passat CC (the things you do for grandchildren) . The comparison has to be as near to like for like as possible.