I've heard the 6 and the sophia side by side. The 6 is a better all around speaker, better bass, better detail, better tranparency. The 6 retail price (around 20K) vs the Sophia around 11k, the Sophia is a better deal and put your money better electronics and cables. However, if you are buying used, the 6's are a steal around and below 10k. Used, you are much better off with the 6.
