I would never turn down an invitation from a lady, better or worse than I am, but, alas, I am still low enough in confidence to not ask a lady that I percieve to be much better than I? Really, why do it? I do not ask for dance lessons in a social setting---hence, I will be unlikely to learn much other than that I suck at it, I am likely to just bore her or embarrass myself with clumsy leads, I'm not sure it would serve any purpose. I do dance with one or two ladies above my level, but they are personal friends, one I've known for 20 years though i had not seen her in many years until I started dancing. Dancing is a great leveller of humanity. No matter your success in other areas of life (money, fame, career, family, however you define it) getting on the dance floor for the first time puts you on the same level as the next guy. I have been at this (WCS) for about 15 months. I stick to those that are at an even or less advanced stage because I can enjoy the dance more since I am less worried about boring my lady partner or making a fool of myself. Gradually, the ladies I dance with have greater ability. Gradually, I will get better.