Greek Style Flank Steak

We have made this one twice.  Once with beef and once with venison.  We liked it, didn't love it.  I served it in pita bread with mixed greens and tomatoes.  The first time we made it, we made the sauce.  The second time, we just bought the sauce from the store.  Our family probably won't make this one again.  It's pretty expensive for us to just feel meh about it.  Greek style flank steak with fat-free tzatziki