Floorstander or Larger Monitor With Voicing Like KEF LS50?

Love the KEF LS50- the voicing is just perfect for my tastes- elevated response above 2Khz that really opens up vocals and horns.  
I would just like something capable of playing louder in a larger room.  
So far I have listened to the KEF R-series (except for the R500) and they did not do it for me.  Same with Harbeth C7ES.  
Thanks in advance.