Hi Leddy
They are not that great. The faces and heads in general are the weakest parts. So a solution would be replacing their heads wiht resin heads (Hornet, etc.).
The good thing about them is the subjects and poses, because the traditional model brands (tamiya, dragon etc.) do not have civilians.
The prices tend also to be a little on the high side.
Here is an example of a few 1/35 Preiser figures I used in a diorama: