I commented more about this here. Where I believe that I'll Get You is an all time classic song and one of Beatles greatest song
I do agree with the view that Pastmasters volume I is more uneven especially due to the covers however I love the originals so much that I overlooks it.
From reading this website
I learn that even early Beatles songs aren't really primitive or compositionally uninteresting particularly from a harmonic point of view. Even their debut album Please Please Me has interesting chord progression