My 2 cents:
I really think you have to take price into account when evaluating the quality of a guitar. It's not fair to compare a Korean, a Japanese and an American guitar on equal terms when they cost $400, $800 and $1200 respectively. Ibanez turned to Korea when Japanese labor costs became too high to produce for the mass market. The guitars that are still made in Japan are $800 or more, and they're very nice.
I think that Korean guitars are technically very well made for the price, amazingly good actually. The workmanship, fit and finish are all very good. The parts may be on the cheep side, but acceptable. They've really come a long way in the past 15 years. And their quality control is very good, not like Current american offerings that are basically a crap shoot (I've seen $3,500 Gibsons that I wouldn't pay $300 for - don't get me started! )
Now Korean labor is getting expensive, and the big companies are turning to countries like China and Viet Nam for their production.
My only complaint about the Korean guitars I've owned it that, although they look great, they just don't play quite as nicely as the older Japanese and American guitars. This is subjective, and possibly not important for a beginner, but the old (15-30 year old ) Japanese guitars are just looser and more musical feeling to me. So when I buy Ibanez, I turn to the used market where you can usually get a fine Japanese made model for the same price as a new Korean one.
-Sven