I use a steel one. Mostly because it's lightweight yet a good material for this type of cooking.
It works very well indeed
though I changed the lid for camping for one of the Ikea ones with fold down handles.
I'm vegetarian, I like stir fry, but the wok's good for cooking mushrooms, tofu, roasting oats and nuts and the like too.
I have one that's kept for meat and it's excellent for cooking thin strips (try venison or beef ham flash fried in butter with chilli and serve with rice or couscous) of meats. Brown meat and add a little liquid and cover and the wok makes a great job of chicken fillets (think curry), or just keep the chicken moving and it makes a really good quick roast chicken. Works on squirrel too I'm told.
It's great for a really quick omelettes
and it works to make fresh egg fried rice if one of the microwave sachets is opened up and the contents stirred through, covered and allowed to finish cooking.
Basically, it's useful for frying, dry roasting, simmering and steaming.
On the down side, it's bulky to carry. Light though.
cheers,
Toddy