I've had the Weber Q-2200 for a bit over a year now, love it. I haven't kept close count, but would guess I can cook 5 to 6 meals on the small cylinder. I have 5 of them; refill them off a 20lb tank. While discouraged by the manufacturers of the bottles, adapters are sold and there are videos on YouTube describing how to refill them.
I can't give you feedback on how they cook meat, as wife and I are vegetarians, but all things we grill on the bigger Weber at home, we find are just as easy to cook on the Q. Asparagus, bell peppers, eggplant, zucchini, mushrooms of all sizes, bread to toast, quesadillas with a range of fillings, pineapple and other fruits for deserts ... does it all!