Originally Posted by phol

I would go for the 251 for the longer sleeping time. By the time you're airborne, fed and can think about sleeping it will be around 2am, which is manageable. On the 237 it's more like 4am and not long before your body clock is waking you up for the next morning. I dislike a lot of the late European departures for that reason, I'm always shattered when i arrive.