I normally get creative and put a ton of spices on it. Most of the time it comes out great. In addition I spray it with olive oil. Those steaks are to die for.
Thickly chop mushrooms...
Saute in olive oil till done...
Splash in a tablespoon or two of balsamic, let it sizzle and reduce a bit... pour over steak... doesn't get no better than that.
Montreal seasoning.
My own rub ( mix of pepper, chilli powder, garlic, and other things)
Sometimes just tons of black pepper and garlic
Sometimes i marinade, teryaki or lime+habeneros for a super spicy steak.
cajun spice
or montreal
or shits load of black pepper
for your own bbq sauce use tomato sauce (sugar free), red wine vinegar, splenda. worchestershire sauce, tobasco, curry powder, dijon mustard, thyme, coriander seed and chili powder
me i love horseradish mixed with dijon
also gotta be flame broiled