I'm surprised to hear that not many people like them, I've always thought they were one of the most influential prog rock bands.
Anyway, I love them. I can't stop listening to Brain Salad Surgery. Karn Evil 9 is definitely their best composition IMO, and I totally agree with you, amazing piano skills on Emerson's part in 2nd Impression. Just hauntingly inspiring, a bit like Toccata in some way. Benny the Bouncer has cool bluesy piano riffs too
