I've also flown on Air Canada, Delta, United, Finnair, Iberia, JetBlue Airways, Norse Atlantic Airways, and French Bee in economy across the Atlantic.
These airlines are a mix of major and low-cost carriers with varying food and baggage rules, but I find the economy products comparable in terms of space and comfort. I liked British Airways' economy seats better than those on United, Iberia, and Air Canada, though.
The best inflight food I've had was on Finnair and JetBlue, so I'd recommend those for anyone needing a solid meal. The latter also boasts the roomiest seat pitch at 32 inches.