Hmmm, was sitting the fence because the 2007 was a waste of my time (and $6.99). I don't use Winchester powders so I didn't care for the manual.
I find myself rereading the 2004 one more than the 2006 and 2007. Matter of fact, in the midst of packing for my move to Texas, the 2004 is left on the shelf next to Lyman #48 while the two newer ones are packed with all of my other manuals and the press.