Hi Sue
Not done the Chicago route (doing that this Oct) but last Oct used BMI thru Washington then AA to MCO. Probably the best transatlatic flights ever taken. Used BA, AA, Virgin, US, Airtours (urgh) european(travel city direct) continental (again this Xmas) and probably others not coming to mind.
Their inflight entertainment was v good, latest films(last Oct) included Finding Nemo & Bruce almighty, Italian Job. plus loads more.
loads of games (think it was Nintendo)
Choice of 2 cameras on outside of plane 1 going forward, 1 facing down to ground.
Never short of drinks being offered.
Friendly staff.
Legroom was OK but being 20 stone and 6 foot I always want more in this department.
Food was good as far as airline food goes (see
http://www.airlinemeals.net/ you might find pics if you search)
Would have used them again this Oct if price had have been better but Using AA for total journey thru Chicago. BMI wanted £500 each AA cost me £295 each.
Hope this helps
Wayne