I’m told that Grohe’s new Rapid SLX concealed framed cistern is the quietest cistern on the market now so it seems very appealing.
Has anyone had one? Is there a difference in quietness or is it a bit of a sales gimmick?
And this may be a silly question but is this cistern compatible with any wall hung WC that is attached to it? Or does any brand WC like RAK or Duravit fit onto this new Grohe concealed cistern?