DO-AHEAD TIP: Marinate steaks overnight or for at least 5 hours (see recipe).
In a small bowl, whisk together all seasonings (coriander through cayenne pepper); rub mixture into both sides of each steak. Place steaks in a large zipper-topped plastic bag.
In a small bowl, whisk together vinegar and oil; pour over the steaks then gently massage them with the mixture. Seal bag and refrigerate overnight or for at least 5 hours.
At time of cooking, preheat grill to MEDIUM-HIGH. Remove steaks from marinade and grill for 5 to 7 minutes per side or until they reach desired level of doneness.