...it also has a major advantage with longer exposures as the reciprocity is very slight.
That is interesting. I have found it, and the other Efke/Adox films, to be among the most vile offenders in the reciprocity failure department.
Also, I am doubtful of the claim that a high silver content gives the film "more mid tones." Anything you see different in the tonality of the Efke/Adox films likely has more to do with spectral sensitivity than with silver content.
Efke/Adox are attractive and cheap emulsions that are available in many interesting sizes, but they are made with very poor quality in the grand scheme of things that are available today. I use them, but would never consider them "general-purpose" films, due to their lousy quality, their delicacy, and their need for special handling in order to get good results. If you can't just throw it in some D-76, whatever stop bath, and whatever fixer and get good-enough results every time, it ain't a general-purpose, every-day film in my book.
I would go for the Foma, or some expired but cold-stored Ilford, Kodak, or Fuji. Going back to what the guy I quoted was talking about, if reciprocity maintenance in long exposures is important to you, I'd suggest Fuji Acros 100 or Kodak T-Max 100.