If you're only going to get one, get a Yugoslavian model. The two I have are in minty condition and they are quite accurate depending on the ammo they're fed. Much better accuracy than the Soviet examples and better than the Chinese examples which are more accurate than the Soviets.
The Yugos can be a bit difficult to find but they come onto the EE on a regular basis.
Now, you also need to learn how to properly clean the socalled "cheap" ammo and understand it's cheap for a reason. Mainly because the primers contain corrosive chemicals. Also, the surplus ammo will not shoot to the same point of aim as North American produced hunting ammo.
You may also want to look into one of the no gunsmith scope mounts such as the Magwedge or similar models. There are others that are satisfactory as well.