I don't have any french knickers but I do have plenty of thongs and tight boxers. I think I'd only buy frenck knickers if I was dressing up specifically for some fun. They other types can server a duel purpose in that I can wear them to work and feel comfortable and hubby likes them too.
Thongs are nice on a woman but i think French nickers are starting to get really sexy indeed especially seeing that little bit of ass sticking cheekly out.