I assume by 35mm you are talking about film cameras, not digital. In that case, I don't think there is any agrument -- Leica is the best 35mm SLR. That said, I would still probably stay with Nikon simply because it has a wider variety of lenses avail...
You can take "old fashioned" pictures with any camera. Much in the way of an old, prewar look though can be accomplished with aide of an uncoated lens, which were commonplace before World War II. Unfortunately, though, the 35mm format didn't really t...
Leica P&S cameras are made by Panasonic as others have already said. They are probably better than Panasonic brands since Leica would specify the manufacturering standards to be applied, but it's not right to assume that they are better than all came...