Has anyone become familiar with these Core Series" speakers that Sony has come out with in the last couple of years? They sound surprisingly good and have great reviews and tests. They are my best sounding pair of speakers in regards to balance and neutrality, and I've had lots of good speakers over the last 15 years. Sony and Yoshiyuki Kaku did a great job with them. They have a fairly flat-warm contour with good detail, balance and dispersion. Braced MDF and film caps add to the value.