Ah yes, I was there too! My perspective was that Stu just grew and grew through the albums, offering something different each time. Just as you nailed a few of his lines, he comes out with more! I loved all of the SZ albums, I think they began to loose something that made them special as people were replaced. So although the later albums still offer a taste, they are not for me...
Not really listened to SZ since, although I follow him on Facebook, which now I think about it, is a little weird!!😀