Vandersteen Model 1 or Focal 726

I have Vandersteens model 1s.  They are in great condition inside and out and I'm fairly happy with them.  Due to my new stereo fever I am considering purchasing Focal Chorus 726 speakers but I'm not anxious to spend $2000 if there is not much difference in sound quality.  If that is the case, I'd stay with the Vandys.  Any advice would be greatly appreciated.  Doug