Looking for a pair of speakers in the $10k range. Speaker technoligy has been advancing but used speakers ( 5 yrs old) are 1/2 the price. Are the advances plus no wear, worth the cost? Then theres the 3rd option, dealer demos. Usually 2 or three years old at a 20 to 40% saving. Any advice would be apreciated, and I thought there woul already be a thread like this.