A lot of good opinion here.
As it happens, I own all the rifles suggested. M305, SKS (Ruskie, Norinco and Yugo) VZ58, and the JW103 & 105. They all feel very different. If you handle them, there will be some that will feel better than others.
The cost of feeding them can be an issue. The accuracy of the 7.62x39 surplus ammo may be an issue.
Very soon I plan on taking all of the above rifles (plus a #4T and a NM sniper clone) to the range and shoot them all off a bench with both surplus and handloads. Until then, I cannot really comment on how they campare for shooting.
I have shot them all, but not at the same time under similar conditions.
The last one I shot was the JW103, less than a week ago. With CZ ammo at 300 yards it was mediocre - about 3 minutes. Trigger was fantastic. next time will include handloads, so we can see how the rifle does and how much of the group is the milsurp ammo. I also have some Wolf commercial HP ammo to try.
Stay tuned.