If there is some good/significant improvement that can expected after the 19 breaks in then I would consider it and wait to burn it in....and if they still retain this kind of character even after burn in then they are not for me...I would have to take the 11.
The 19 is highly revealing - Telarc uses the active studio version of this speaker with similar or the same mid/woofer driver. The source will be quite critical - you do not mention what it was driven with? A bad recording will certainly be more evident than with a more laid back type speaker. Harshness from audio compression particularly on many modern remasters will be more evident - see this movie.
Have you considered the SCM 11 and then saving up for a C1 sub? You could have your tight bass and the more laid back mids - I don't have the C1 but ATC's bass designs are all extremely tight and articulate (critically damped).