First world problems, but I am not a huge fan of A330 business class. Like others here, I can get to sleep on them but the angle provides an extra challenge for me and the Mark II and other fully flat seats are significantly superior for sleeping IMO. A little off topic, but I don't like the cramped feel of the A330 cabin and find it a sub-par business class experience versus the 747 with the same seats, and of course the 747 or A380 with mark II.