You might let us know a few things, like where you are starting from? Who's paying - or is it an award? Is it important to be there on time?

There's a lot of debate about who has better seats, or better lounges, but it's sometimes more important to consider what will happen if things go wrong. For example, Czech (OK) Airlines may be comfortable but if their incoming flight is delayed or breaks down, you'll be stuck. Whereas if you go Air France via JFK they have 4 flights a day.

My pet hate is short red-eyes where there's a long drawn-out clanking dinner-service, a brief few moments of sleep and then the crew decide to get breakfast over with and turn all the lights on 3 hours before landing.

Most often it's the US airlines who do this. Air France's offhand crew are not too bad in this respect.