Several threads like this.
It is thanks to the internet, pioneers like Floyd Toole, and the modern measurement and design era that have given me confidence to buy speakers unheard. Most have been good decisions.
It's time to part with my S400 MKI's, but I can't imagine replacing my S400 MKII's soon. Not until a future larger room where I may need more firepower. So, the design by measurement approach really does produce great speakers. If you get a tryout period and a good return policy, you don't have much to lose.