I booked a KE flight on DL.com in April from SFO>ICN>SFO in Business Class and was able to select my seat at booking for both flights. I had the same seat on my flights as were confirmed at booking. I have just booked another trip exactly the same way as in April with absolutely no difference at all in being able to select my seat, so I don't understand what problems both "wlau" and "realHJ" are talking about? Maybe they fly Economy Class where things are usually handled differently. As the saying goes..."You get what you paid for!"