The whiners complaining about hiss typically aren't listening at anything close to reference levels or are using a monitor as a nearfield that's really no supposed to be used as an nearfield. I have KRK V6S4, which had a few guys moan about the hiss. There is a very, very soft low level hiss but it's not a big deal at all. External hard drives used for backing up sessions are way louder than any powered speaker. The JBL 305 and Kali LP6 were both much louder than my KRKs and their hiss wasn't as big deal either. They translate just as gloriously as their KRK 6000 predecessor. The new Rokit 5 is also okay and doesn't hiss at all 1m away.

No three way speaker or an 8" woofer and a 1" dome tweeter are going to crossover one foot from your face. Yes I have seen people use bigger monitors in ultra near field. The complainers are almost all listening at 60db or something.

I liked the Kali LP6 but felt the tweeter was untrue. The woofer wasn't super responsive but it was okay. The LP8 was flabby and the mids a good deal worse. The HS8 was more true and detailed tonally than both of them if your room can handle the low end but the LP6 (and the JBL 305 mkII) will show compression more easily due to the peculiarities of Yamaha's plate amp design. IN-8, who knows but if it's not flabby like LP8, it should be decent. The HS8 is a proven, if papery sounding, standard that will be tough to top in this price bracket.