After a couple listens, I prefer the back half to the first by a lot.
There aren't as many tracks that pop out and grab you right away so I feel like it's going to take some time to completely warm up to. Right now, I think I'd place is somewhere mid discography.
Amnesiac > OKC > The Bends > Kid A > In Rainbows > King of Limbs > A Moon Shaped Pool > Hail To The Thief > Pablo Honey
Oh also, great OP AlexisNeiers

The Stanley Donwood of ATRL tbh
