I believe Popular Photography tested the FA 35 several years ago -- so
along ago that it is not one of the tests posted on their web site. As I
recall, and going on others' experiences with the lens, it is a bit soft
at f2 but spectacular thereafter -- nearly (but not quite) as good as
the FA 31. It is now quite popular as a "normal" lens for the D or DS.
Maybe hard to find too.
How is your Tamron at 35 mm and f2.8? If it is okay there, do you need a
soft f2?
Other than f2 the FA 35 would almost certainly give superior results,
but you might notice them only at extreme enlargement. That Tamron is
very good.
Joe