the best business to focus on is the one that you sell a product that is attractive, durable, not too expensive. You want to do a business that attracts all ages, sex and denomination, something that can probably be used on a daily basis and is always in demand. Businesses that carry only one brand rarely have a high demand of their products if any and so you want flexibility on your business. A sort of jack of all needs, if one thing doesn't sell the other would.