If the SKS you're looking at is a five rounder I believe that was imported by Navy Arms back in their heyday. From what I've been told the five round 16 inch carbines are pretty rare. I'd like to get one as a nice little South Florida brush/hog gun. Get a chewed up one with a ground off bayonet lug, put it in a modern stock, and G.I. Tech sights. Would make a great little rifle....
Go for the SKS, 7.62x39mm is one damn fine cartridge. I'm a fan of the .44 Mag but the M43 Soviet wins hands down.