Interesting as I flew KLM/Delta (same company) in Feb (LHR - MSP) and both there and back they had full individual IFE and pretty good food (free wine and beers too), they also didn't use a 747 it was a 767. The type of aircraft will depend on the route anyway as far as I'm aware. Leg room was fairly good although not brilliant, luckily we had fairly empty flights there and back so could stretch across loads of seats if we wanted, the air hostesses actually told us to.
http://www.seatguru.com/
Will give you more information on the aircraft and what IFE there is.
BA is meant to be brilliant though from what I hear (this could just be BA Club).

See if you can get an upgrade to their new Economy comfort on the transatlantic leg, it's only $80 but you get a better seat and a little bit more room.
With Delta/KLM? Where do I need to do that, at purchase or at the desk?
*my definition of great is that we didn't nose dive into the sea which is all that really matters to me![]()
Usually when you check in online.
Your just asking for opinions here:
I personally avoid Delta, AA and United. I would quite happily go with BA (never an issue and good customer service for me). For me it would come down to the more important factors of:
- Direct flight?
- Aircraft type?
Usually the factors above point to BA being the best choice