Sorry, I cannot answer about the MK II versions of those speakers, so I don't know if this will help. But seeing as how no one has responded, here goes...
I heard the Sonata III and Sonatina III at length during a visit to Silverline HQ here in northern California. The Sonata was FAR more engaging than the Sonatina. After hearing the two, my wife and I would never consider the Sonatina. I know, it's an excellent speaker, but the only thing that came to mind for both of us during the audition was 'blah'. The Sonatina came off like a distant, thin sounding speaker with a barrier to engagement, while the Sonata (with Alan Yun's 7W SET amp) was for both of us beyond reproach. In other words, it sounded perfect in every way imaginable.
Good luck!
Howard
I heard the Sonata III and Sonatina III at length during a visit to Silverline HQ here in northern California. The Sonata was FAR more engaging than the Sonatina. After hearing the two, my wife and I would never consider the Sonatina. I know, it's an excellent speaker, but the only thing that came to mind for both of us during the audition was 'blah'. The Sonatina came off like a distant, thin sounding speaker with a barrier to engagement, while the Sonata (with Alan Yun's 7W SET amp) was for both of us beyond reproach. In other words, it sounded perfect in every way imaginable.
Good luck!
Howard