Wal-mart steak?
Just spend an extra buck and get something better. I used to buy this beef (I believe Kroger sells it back on the East coast along with some other chains) called Laura's Lean Beef. All natural, hormone free beef. Delicious stuff. Used to make burgers, tacos, 'n everything with it. Well worth the extra buck or so that it costs.
http://www.laurasleanbeef.com