Hmmm. My feelings don't seem to mirror many here on this OST. To each his own, I suppose.
I listened to the discs slightly out of order. When I got my copy only jb really had commented on each disc separately. I decided to listen in the following order: his most hated, his 2nd most liked, his 2nd most hated, and his favorite. I figured that if I were to agree I'd get the bad disc out of the way first and save the best for last.
So my order of listening was disc 2, 1, 3, 4.
Overall I loved disc 2. I will fully admit that woman is horrible at rapping, but you know what...it grew on me! I kind of like its badness now. Most of the rest of the disc I legitimately liked a lot. I've listened to the full disc 4+ times at this point.
Disc 1 was pretty good, though there are a lot of skippable tracks on it. Some of the best and some of the more mediocre tracks. I've listened to the full disc twice and certain tracks many many more times.
Disc 3 was mostly garbage. Two or so tracks (I don't even remember which ones) stood out and a few more were ok. Otherwise, by far my least favorite disc. I listened to it fully once and took it out of the player. Scared to listen through it again...
Disc 4 = boring. A heck of a lot of ho hum music that sounds like it is for cutscenes. A few gems on the disc for sure, but I'm not anxious to replay it. Listened through once only so far.
I listened to everything in the car except disc 2. All the other discs were listened through casually while driving. Therefore I don't know track names or which composers did what for the most part (except some tracks which are obviously Hamauzu). I certainly cannot identify Mizuta based on his other works.
I think I'm going to retry discs 3 and 4 especially and start really solidifying my top picks and figuring out who composed what. I listen to most of my music on disc, so it would probably be beneficial for me to burn a 1-2 disc mix of absolutely incredible stuff from this OST.