I've flown on the KE A380 in F. Overall I wasn't impressed. Don't get me wrong, there's nothing uncomfortable about it, I just wasn't wow'd. Some examples: F lounge at ICN has nothing special to it. Food onboard was just fair. Service was really not standout (we had flown into ICN on OZ J and I found the service there to be better). You are on the lower deck of the A380 with I believe a small bar in front, plus a bar immediately upstairs which was kind of neat (there was a seating area where you could sit which was neat).