@1ns0mniak @Soy_Magnus @xianc78 @thegreatape yeah personally I prefer the grill, pan fried, or even in a broiler (my broiler is real fire). Steak really doesn't take long to cook (unless you hate steak and cook it until it's grey) no matter what you use to cook it. I guess the advantage with a microwave might be no need to preheat, but that comes at a cost of flavor and texture.
Grilling takes the longest because you need the coals to get hot before you can even start worrying about grill temps (propane is an option, but coals are better), but that's also where I think the best steaks will be cooked, and if you have a bunch to do the efficiency gains quickly mount since you can parallelize the cooking.