Sd2005gt
I love my JM Lab Diva, they can fill out even the biggest room with big bold sound while letting every bit of details through. Altough they are not your average audiophile hyper detailled loudspeakers, you never get the feeling that something is missing. Unlike other JM Lab models, they are not as bright and in your face as one might suspect. Before I made my choice I had listen to the Micro Utopia, the Verity Audio Fidelio and the Sonus Faber Guarneri and I found the Diva to be the most versatile of them all being able to play all kind of music. And since I might one day merge my home theater and my 2 channel systems, the Diva was the practical choice. Sorry I can't give you my opinion on the Sophia as I never had the chance to hear them but I do feel that in your case you might want to go with the Nova if you want an upgrade update, the Diva would be more a side step, something different than your Sophia, guess it is a matter of choice as everything is in audio.