I just read somewhere that some of the very First Russian SKS had no chrome-lining, but the rest were chromed.
Either way, you did very well as the Russian wood looks much better than that on my Norinco, it is harder to scrape/cut, it has no (useless) grenade launcher which extends the center-of-gravity fwd., and has the wicked, blade bayonet
If the bore is in good condition, that combination of characteristics puts it at the top, from my perspective. The reason for choosing the Norinco in early '08 was simply the steeply-discounted price in a FTF sale. Any second SKS for me would be a Russkie.