Don't forget Crutchfield as well as other online retailers offer a 30 day return. Perhaps a listen is in order while you still have the Klipsch.

Just my personal taste, in comparing Boston to Paradigm I preferred Paradigm. Haven't heard PSB. NHT do have a good rep but are there product still in stock as they have taken a break from producing anything?

I hooked a pair of Klipsch towers to a Krell integrated one time and they did more than "fall apart". Of course, those two aren't typically paired together. It caused me to lose some respect for the line though.