I feel exactly the same way about this unique band. For the first time in a long while I listened last night to their first album, and felt that nothing had changed about my appreciation and love for them, and the music is fresh after all these years. They play, in all senses of the word. They came together fully formed. I have had occasional listenings to the befores and afters of various members, but i must admit nothing is as complete as the coalescence on these 2 albums (I am a big Wyatt fan though). The self reflective humour compliments and contradicts the very serious & strong musicianship, much in the manner that Satie used humourous titles to almost disguise his unique music in the onslaught of romanticist excess.
As a self-taught musician of 35 years playing, i still find i am overwhelmed by this music. All the U.S. 'jazz' inflections have evaporated to produce something new that rocks and rolls down the English countryside. I sit in awe. There's no point in trying to work out how they do it. Get this and enjoy!