Savory Garlic marinated steaks

This marinade was pretty tasty. I have to admit I was a little concerned about some of the ingredient but it was good. I could also see using this marinade for chicken and pork. The steaks were quite tender. Much better marinade than any I've bought in the store. I did not use the rib eye steaks called for in the recipe. Instead I used sirloin steaks and it worked well.

http://allrecipes.com/Recipe/Savory-Garlic-Marinated-Steaks/Detail.aspx?prop31=1

1/2 cup balsamic vinegar
1/4 cup soy sauce
3 tablespoons minced garlic
2 tablespoons honey
2 tablespoons olive oil
2 teaspoons ground black pepper
1 teaspoon Worcestershire sauce
1 teaspoon onion powder
1/2 teaspoon salt
1/2 teaspoon liquid smoke flavoring
1 pinch cayenne pepper
2 (1/2 pound) rib-eye steaks

In a medium bowl, mix the vinegar, soy sauce, garlic, honey, olive oil, ground black pepper, Worcestershire sauce, onion powder, salt, liquid smoke, and cayenne pepper.
Place steaks in a shallow glass dish with the marinade, and turn to coat. For optimum flavor, rub the liquid into the meat. Cover, and marinate in the refrigerator for 1 to 2 days.
Preheat grill for medium-high to high heat.
Lightly oil the grill grate. Grill steaks 7 minutes per side, or to desired doneness. Discard leftover marinade.