Easy Steak Sandwich
When shopping for steak sandwich steak, I advise you pay more attention to the way the meat looks than the cut. You can't go wrong with a nice tender New York, but I tend to look for the cheap steaks with some nice marbles (fat).
If you have time, freeze the steak. Then, with your sharpest knife, slice the frozen steak as thin as you can. That is the hardest part.