M & K speakers
I have M&K S150 main speakers, four SS150 surrounds, and an MX350 subwoofer. I use two of the SS150 as tripole side speakers and two as rear speakers with the direct-radiating component decreased. Their build quality and sound reproduction are outstanding. M&K just seems not to advertise much for the home market and most of the mags(rags) consequently do not give them much play. They have a small residential market share and do not turn up in forums much. Professionals, however, know them well, and they are the primary speakers in many sound studios. I cannot speak for the models you are interested in. I can only speak for my own satisfaction and the quality of the product the company makes.