Secondary school place :KENT vs BUCKS

[Doctormum2021]

Hello everyone,
I am plannning to move to SE of England , looking at Kent vs Bucks area. I am looking for a town/city with excellent grammar schools as I have children who will be preparing for 11+. I also want a posh , friendly nice area. Which places would you suggest please ? We currently live in York.
I look forward to helpful responses.
Thank you

Yes, @grammamum - I think TWGGS has an atmosphere all of its own - I don't think our daughters' experiences are unique sadly, and I don't think that they are at all good at dealing with the challenges of the cliques and manipulation that are rife in all girls' schools, but especially so with cohorts of clever ones. (Queen Bees and Wannabees was a constant next to my bed during her early years there!).

My eldest is leaving Skinners' this year which I'm so sad about, but at least I have two more still there so get to be part of it for a bit longer.

@Ifailed, Otford is also on the faster Victoria line route as well as the Thameslink service which stops everywhere!