My SongTowers, now on permanent loan to my son, are 11 years old. I ordered them in August 2007, and first heard them early in September.
I had first heard Dennis's original ST prototype sometime in the spring of 2007. Even though I wasn't really looking to buy new speakers, it took me less than 10 seconds to be completely captivated by their sound.
Two years ago, I bought Veracity STs.