Regardless of objective quality differences it’s gotta be In Rainbows for me just due to nostalgia. It sounds so stupid but it really was an incredible thing to go into my dad’s office and learn Radiohead had released a new album, on the internet, and you could name your own price to download it. And it’s such a perfect 8th grade “I like rock but also other s***” album too
Classic mashup fodder too

Weird Fishes, you’re not gonna find a more iconic drum beat in rock in the last couple decades
for me it's always been kid a. only album of theirs i can still occasionally listen to post zionism
Ok computer is most consistent, but kid A has some songs that are better than the highs of ok computer
None of them
OK Computer is an absolutely perfect album experience. Heard it for the first time 20+ years ago and there are very few if any albums I would put ahead of it.
Props to In Rainbows for being almost as perfect though and to Kid A for doing something completely unique and enveloping.
I like Hail to the Thief more than Kid A and Amnesiac

the original tracklist thom yorke had for it makes the album so much better