Heard it on a soundboard so not sure how it'll sound in an actual car. Initial thought was WOW... these sound very rich and realistic. After about 5 minutes of listening i concluded that they are very good besides being a little TOO rich in the vocals. But an EQ could smooth that out. I heard Focal Polyglass speakers first followed by the 165's, then Morel Tempos and some random DLS. Granted they were on different soundboards, i'm pretty sure the store wasn't trying to make the Hertz sound better on purpose.
All the other speakers sounded just like speakers, they didnt grab me and throw me into the music at all. The focals almost did but just lacked the incredible depth that the Hertz had. Morel Tempos were pretty much a joke and so were the low end DLSs... Granted they aren't in the same price range as the Focals or Hertz i was still VERY surprised of how ordinary and dull they sounded... Almost like hearing a boombox. So to conclude... i fell in love with the HSKs.. i must have some. lol
update: Listened to the Focals and Hertz again today to make my decision. Hertz for sure. The focal display had the speakers toed in and the hertz were oddly toed out just a little, this made it hard to imagine how it would sound in my car and even how it would compare to each other but i pretty much figured it out. The Polyglass sound is very open and spacious but it doesn't have much depth or realism to the sound. On songs with lots of instruments, the speakers seemed to struggle on reproducing each sound faithfully and cleanly... It kind of got "cluttered up" with sounds.
The hertz definitely presents the music in a more intimate, yet laid-back manner and is VERY smooth. The tweeters sound so delicate and sweet, it's very pleasing to the ear. the mids reproduce all the music with precision and sincerity. Honestly i cant praise the sound enough. They are nice indeed. Getting them put in on monday so i'll update in a week or 2 once they break in