Mamiya old ZM. There's something about how it felt, and handled. It had this tactile quality to it that I really liked. This was my main camera for a couple of years and I took it pretty much everywhere. Sadly, the build quality wasn't quite up to that kind of intensive (ab)use and ultimately it suffered from several problems that were increasingly difficult to fix. I may still have it in a box somewhere, although I'm not entirely sure - perhaps it's gone now.
One of the images I made with it:
It's a small photopolymer intaglio print of a digital positive, the original negative being exposed on TMY2 in the medina of Fes, Morocco, about 8 years ago. It was the last trip abroad I took this camera on.