Hi guys !! Purely on the strength of total units sold , sell out concerts and longevity of his solo career , one would have to say Paul, but if pushed my personal preferences are for Johnny and George,s material.I listen regularly to all three , and not just the "more popular" albums and I can understand how Paul catalogue would perhaps appeal more to the casual fan as well as hard core followers of all things "Beatle" but John and George for me bared their souls ,warts and all ,and in doing so moved us to feel and experience along with them those inner emotions, common to us all, that inspired the song to be written in the first instance. I love Paul,s music for all the obvious reasons but John and George,s material,by which I mean their whole "commercial" output, reflects the place where I reside , both emotionaly and as a thinking human being,yes regardless of sales figures and enduring legacy of much of Paul,s work my heart and mind belong to his two band mates who managed to reach me on a totaly different level .