Thank you to all who have responded so far. The information has been helpful in adding to my store of audio knowledge, especially about speakers
To tomic601. I spoke to Vandersteen customer service to find out more about the difference between the 2Ce Signatures and Sig II. The 2Ce Signatures were issued approx 10 years. ago. The "Signature II" is the second version of the original Signature, and was issued approx. 6 years ago. I was informed that every upgrade in this series represents a significant improvement in sound quality.
BTW, the rep told me that there was a Vandersteen 5 speaker that was under $10,000 (?) and sported amps for the low end drivers. The current 5a is an advance in speaker technology and materials which includes the EQ circuitry and redesigned crossover. etc.
I will check out the Treo CT, but I think they are out of my price range of $3000 .
S.J.