I heard the Bessa has an optional side grip which gives a bit more real estate for your hands. That being said, my guess is it will still be a bit small for me.
My Konica Auto S2 is pretty huge by RF standards and fits my hand okay but could use a side grip to fit my palm in.
I currently own a Nikon f90x and it has electronic RF confirmation that i pretty much "need". If not going the RF route I am considering a second F90x or something like that. The E-RF is a blessing in many situations!