These youTube 'reviews' can often be misleading. I own Klipsch Heresy IIIs and, believe it or not, they sound quite good in my room - natural, not squeaking, not harsh, with fast attacks and a more than decent imaging and soundstage. If one just watches this video he will never buy Heresys; if one listened to them blindfold, he probably would not think they are Klipsches. In the 60s Acoustic Research voiced their loudspeakers in anechoic cambers, to have the flattest frequency response. Then you bought a pair, placed them in a normal living room and mid and treble disappeared, bass was predominant and placing them was an ordeal.
I gave Klipsch a try, am happy, may the picky reviewer and his graphs Rest In Peace.