As a possible last word on this topic, I was in the car driving with the family today and had the 2 CD John Lennon "Working Class Hero" set on. Ya know, a lot of his solo stuff is TOO intense and not really enjoyable. Something is missing...Paul? George? Ringo?
There was certainly no Paul to balance his more caustic tendencies. I find my favorite stuff of his to be the last (HIS tracks from "Double Fantasy" and "Milk and Honey") and a handful of singles ("Power To The People," "Imagine, " "#9 Dream," "Stand By Me," "Give Peace A Chance" and of course, the awesome "Instant Karma!").
Paul, on the other hand, needed John to keep him from his overly sweet and bubblegummy leanings. About the only Wings stuff I can stomach is "Band On The Run."
Honestly, I'd actually prefer to listen to Julian Lennon's work over that of the solo material of his father. His father's great voice but the music isn't as caustic and is considerably more accessible.