Okay, I think I'd spend the money on film and paper in the first place if you still like the Zorki. I've used the Fed 3, Leica M4 and IIIf. What I gained from this, is that the mechanical feeling of the cameras are different but they all make wonderful photos if you're willing and able and the camera is in good enough shape.
The Fed went away, the M4 hardly gets out of the box because I paid so much money for it, I am always agonizing over "what if I drop it". The IIIf comes along just about everywhere because it's so small. So, in my case the most useful camera is the IIIf. And it's always, always loaded with film.