I am looking to do my first roast beef this weekend for slicing. Not much better in the world than a nice roast beef sammich, crisp lettuce, mild cheddar cheese, fresh mater slices, and horseradish on it. Sorry, started daydreaming about the roast beef again. I need some help with how to prep the meat. Anyone got a good rub or marinade for roast beef? Or should I just toss it on the smoker naked?