If I might suggest something; mirroring the texture on the back of the model would make the side seams match up better. (Or I could just flip it on the texture map.)
Model 06 (number 05 in the toolset) is indeed worth redoing.
In addition to the neck area which is slightly off, there are some parts on the side that need smoothing. I’m working on it, I’ll upload the fixed body on the main page when done (but will post here so you know).
Suggestion approved, UV map enhanced (as well as the tint map, and the normal map [I had to remove the transparency to have the skin tone match better the head]).