Bearing in mind I detest cameras that have 'features' it's the OM1/OM1n. Even now the viewfinder is astounding and that's about the most important thing to me - leagues ahead of the average DSLR - big bright and no flashing lights!

In one of my employs I had a choice of kit to take out and the Nikon F2 was lovely but after a few months of schleping F2 kit around London I used to take an OM1, 50mm f/1.4 and a meter. Rarely needed anything else and it made the job and pleasure not a pain.