Wilco are a band who again and again have proven that they can come up with a sequence of recorded songs that merits the term ALBUM. I rate Sky Blue Sky on the same level as Being There, Summerteeth and YHF as simply being a masterful, coherent, deliberate but nonchalant recording from beginning to end. Given the differences stressed in many other reviews I'd like to point out the similarities. All Wilco albums require repeated listening and gradually dig themselves deeply into the subconscious. This one may be a bit easer - but then I've had my training on the other three already. Jeff Tweedy is clearer in his head and his lyrics after detoxing from his painkiller abuse and Nels Cline adds some fantastic guitar play. I chill out perfectly with this. But YHF with its noise will do the same trick.
As for the other albums: AM may be patchy but underappreciated for its highlights, A Ghost Is Born makes me work to hard to list it among the masterpieces and on Wilco (The Album) things are getting just a bit patchy again.