@tomthiel, at the risk of beating a dead horse, please note in order to have a consistent, generally available reference that I used the Audiogon Blue Book for pricing. I also used end of cycle pricing for the CS 3.5's combination, and beginning of cycle pricing for the CS 3.7's combination. The original pricing for the CS 3.5's was about $2550 and the original pricing for the Threshold S500 was about $2900. Of course that doesn't take inflation into consideration. The end of cycle Threshold S550e was priced over twice that cost, which included a nice upgrade of dual trannies and true balanced inputs, that couldn't be used with the 3.5's eq. On the other hand the $11,000 pricing quote of the 3.7's seems quite low, as the Stereophile link suggests $12,900. IMO, the CS 3.5's were and are one of the all time audio bargains. Kudos to you and the rest of the Thiel team!