I enjoy them . Cant wait to get an amp to fully power them. I'm comparing them to my previous klipsch speakers the rvx54. Obviously better low end with the dual eights over the 4-51/4 inch speakers. And the highs seem to blend better with the 280s,than that of the rvx54s. I will assume it's because of the new horn material being rubber and not plastic. not so bright or exaggerated. Becauase The 54s were harsh with certain tones . It was fatiguing the ear. So, it seems to make them feel more balanced as well. Thanks for asking.
I used the audysey setup on my Onkyo, then went back and used spl meter to level match.
Hope this helps.