I am not hispanic, but my husband works as a distributer for a spanish food company and the Goya brand Mojo makes an awesome marinade, especially for chicken. You have to be careful which brand you buy though because some brands are'nt very good. I have found that all the Goya marinades are really good.
Also, I love this stuff called Colgin Liquid Smoke, they have mesquite, apple, and other flavores. You can brush it directly on the meat, or you can brush it onto the grill for a more subtle flavor. Great for steaks and burgers. They also make a Colgin Honey Lime flavor marinade.
I heard the other day a commercial for a grocery store that "ages" its meat for two weeks.
My husband worked as a meat cutter as well, and he used to bring home the steak that was about to go out of date, it was always the best steak. And you don't have to worry about bacteria as long as you cook it done all the way.
I am however a fan, for all my meats. Garlic Pepper and All Purpose seasoning. Its simple, and my favorite.