I've used many film cameras but the Zeiss Ikon Super Ikonta IV 6x6 from 1956(ish) was one of my favourites for walking around with. It was compact with a front door that unfolded the bellows. The lens was a Zeiss Tessar T 2.8/80mm, incredibly crisp. I really regret selling it...
This was probably Ilford FP4 developed in Rodinal and scanned to TIFF with an Epson Perfection V700.