Kid A is the most radical sounding album in their repertoir. It's a mood setting album and definitely lacks any real standout song. It's pretty short on traditional sounding songs in the first place. I'd say Optimistic is probably the one song that sounds ready for radio.
I don't understand how In Rainbows is just another rerecording of Kid A. In Rainbows clearly has written songs on it, songs you can sing along to and play on your guitar, Kid A is like a long continuous epic mood piece.
I'm just curious as to why you think the albums are so similar. The only similarity i can see is the usage of electronic sounding drums on a couple tracks (15 steps, All I Need). Besides that tho, there isn't much noodling with keyboards, it's all pretty normal sounding stuff, guitars bass and drums with clear audible vocals, where as on Kid A you had tons of layers and only a few tracks where you hear Thom Yorke's vocals left untweaked.
Well, I think we're getting pretty far off topic; but to answer the question:
I also think Kid A was brilliant. I Do think there were stand out tracks. Not as sing-able as their previous work, but certainly memorable songs. A couple even rocked!
Amnesiac I was not a fan of. It was the left-overs from Kid A. In fact, my girlfriend downloaded a copy of it right after Kid A came out!
I liked Hail to the Thief, but I think that it was a continuation of the the Kid A sound. Whatever changes there were were very minor. You might compare it to Green day's American Idiot. I actually think Radiohead is a better band than Green day, but Green Day managed to create an album that essentially said the same thing that Radiohead said on Hail to the Thief, all the while massively growing as a band - while radiohead was standing still.
Ok. No problem really yet, but when In Rainbows came out there was that same sound mixed with, well, I should find a more diplomatic way to say this, but to be frank the album REALLY bores me. It goes in one ear and out the other.
It's pleasant? But that's all I can say. It's kind of strange how I can have listened to it multiple times and LITERALLY not remember a single sound, a single, idea a single memorable sound. It sounded like the same sound they've sold to me four times now - but entirely forgettable..
.....To me!
But I'm genuinely glad you're getting more out of what appears to me to be an artistically stagnant band than I am.
I think that Radiohead has done the equivalent of if U2 recorded Passengers and then just sounded like that for the rest of their career.