If you're heading over from the east coast, it's a fairly short flight - usually on the order of 7 hours. Some of the airlines are doing it in 757's, two engines and one less aisle! There's a whole thread about how unpleasant that experience is.

It's a twin-aisle plan so it feels much roomier inside than a single-aisle 757.

What might be helpful is if some of the more knowledgeable people on FT chime in with the usual trans-atlantic routing. Isn't it fairly close to land and diversion spots for much of the journey?