As a shameless plug for my TR, I wrote about KQ's 787 here:

http://www.flyertalk.com/forum/trip-...nbo-dar-j.html

While that was about a year ago, I have been on it a few times since, and would say that the review still stands. Hands down, QR will be better, but KQ is no hardship if you're looking to try something new. Not included in the review is the decent lounge in NBO too. It's no Al-Mourjan, but new and well appointed, though a little light on catering.