Yep, same here. I have at least one hardcover and at least one paperback copy of each book. I love the new mass market paperback artwork for the books, too, so it looks like I'll soon start collecting those....
Well, I thought Blaze was an unexpectedly touching and beautiful piece of work, so I figured mebbe the cancer of the pseudonym got to Bachman and he was kinda mellowing out a bit before the Reaper came calling.
I think Bachman really died with The Running Man. Mr. King's style, particularly in his embrace of darkness, may have changed a bit over the years, but it is still recognizably the same man who wrote the early King books. Early Bachman is a notably different style, but he couldn't keep it up for long. There's a reason that Thinner marked the publishing end of that pseudonym. I remember reading it and being very sure it was Mr. King, and I was only a kid (17). Had he published Misery as Bachman, there would be no question. Every writer has tics, things that carry through from story to story, that are as identifiable as a retinal scan. The Regulators is ugly and nasty, and I personally don't like it at all, but it's recognizably King.
Oh, that doesn't bother me at all, old man!
It's really more of a matter of not remembering what half of the SK books are about without going to Wikipedia to refresh my memory! That's just the way I've always been.