I'm in Paris in late Feb - would definetely like to bang one of these lovely French WGs.
If you mean French as in nationality, Sexemodel has more of them than 6Annonce, though quality-wise and fake-wise it's even more dubious. For French nationals, best bet probably would be this site:
External Link/Members OnlyIf you mean France/Paris-based, all 3 could work though Sexemodel is usually considered by French punters to be a bit below the others when it comes to quality and reliability.
For the last few months, more and more girls decided to increase rates from 250 to 300 in Paris. Thankfully not all, but the trend is growing; and thankfully the raise is not as insane as what's happening in London with the likes of Diva. Still annoying.
I had a very quick look at 6Annonce to see if any known face is around, so I can only mention 2 girls: Dominique, Russian, aamzing body imho and one of the best English I ever heard from an escort, but she can be quite hit-and-miss depending on the person, might look quite mechanical and not even bothering with FK or can deliver the goods (she's now at 300/h so this can be a bit of a lottery). Milena, Ukrainian, one could consider her a MILF since she's above 30; pics photoshopped but she still has a nice face, great eyes and very nice boobs, delivers very well FK and BBJ and likes sex. I also see that Russian pornstar Milena Devi is in Paris and amazingly she's at 300/h; read good things about her but never tried.