Any Korean Epiphone I have played is great, but I am a Seymour Duncan fan so they get SD Jazz for the neck and any of Seth Lover, Antiquities, or Pearly Gates is fine for the bridge. I don't even think abut it any more, it's just the first thing I do. I happen to like the Sheraton because it's a true Epiphone design, no Gibson counterpart.
I think the Chinese Dots are made more consistently than the Korean ones. Alot of people like to hype the Korean made Epis to sell them, but I don't know where this comes from. All of the best Dots I've heard seem to be of Chinese origin, and I own quite a few high end guitars, but one of my favorite guitars is a Chinese Dot that is bone stock. When I got it, I was testing amps in a Guitar Center where my friend handed me this Dot and all of the amps where sounding pretty good. Because of my prejudice towards cheap Chinese made guitars, it took me a while to figure out it was the guitar that was sounding so good! My friend wound up buying me that guitar and I love it! Since then, I've played some other really good ones that came from China. Can you find a pretty good Korean example? Probably, but like I said, I've played quite a few good Chinese examples, and I don't remember any of the Korean ones that sounded as good. My advice, play it through your rig to see if it does the trick!
Mine is Samick made and I love it. Plays better than my friend's 70's era ES-335. Pickups tend to break up easily, which is great for distorted blues and rock. Have to keep the volume knobs under 7 for jazz cleans.