What about lentils? I love me some red lentil dal. Is that on your thumbs up list? Yum yum! But seriously, where do you personally prefer to get your protein? And I think actually that's a question with 2 answers, or 2 questions:

-Where do you get your protein in general, as a daily habit
-Do you feel you should be getting a higher percentage of it from other sources, and if so, what sources would those be?

I'll answer as an example:
Much of my day-to-day protein comes from cheese, black beans, and seafood. Clams if I can find good ones, fish n chips if I can't. I'm a sucker for mussels but only if I trust the source. When I go 'out', I'll admit I'm a St. Louis style ribs addict, and definitely eat a lot of burritos. Granted they usually have chicken in them, but the total chicken in a burrito is like half a breast, and there's 2-3x the weight in black beans along for the ride.
In a more efficient world, I'd be growing sweet potatoes and buying bulk dry lentils and black beans, cutting back on the cheese (subtly different from cutting the cheese), keeping chickens for eggs, and forgoing the ribs.
Somewhere in the middle is a more sustainable diet that I'd still be pretty happy with.