I love them for their unique style... all albums. But the "At The Mountains Of Madness" is a personal favourite for me because of the pure Lovecraftian inspiration <3. Anyway, I can't say any of their song is bad. They are great. It's sad that band like this terminated their existence :(
My favorite band of all times! Listening to them since 97 and they never became boring. I hope they will reunite, even for one gig only, so I can see them live. If it ever happens no matter where in this world or beyond, I'll be there in the first row!