I think S3 was still the best, the pacing, the animation, the music, everything was on point
S4 had some parts that were really sloppy, also the music wasn't as great. Like there was this one ost that plays during the miya twins scenes that feels really out of place. And this might be from watching it weekly but I wasn't as into the game as during Shiratorizawa. I'll have to rewatch S4 again to see how i feel about the pacing.
Also i'm never gonna shut up about this but I HATE that they replaced the commercial skits
We could of had this
But like after some time, I think the change in animation kinda grew on me, I like that the new artstyle is closer to the manga. Some people like Kageyama, Akaashi and even Bokuto look a lot better in S4
I think S3 > S2 >= S4 > S1