aloha
for polaroid, i use a pentax 67. my favourite lens is the 90mm, because it's the only one i've got
for 120mm film i use fuji Neopan & kodak Portra on a 645NII with a 75mm 2.8, and it's my fav lens as it is the only one i've got.
But more recently i tend to forget the Pentax, for a 645 Mamiya, as i managed to find the lovely Mamiya Sekkor 80mm f1.9 lens which is amazing for portait work.
If Pentax ever made a 6x6 in a rolleiflex style, it would've been THE analog camera i would always use for practical reasons for transportation.
I know Ricoh made some but never managed to find one