I started smoking Marlboro's when I was 17 years and smoked the same brand up until I quit around 10 years ago which means that I smoked Marlboro's for a little over 30 years. I would only smoke another brand if I ran out and had to bum a cigarette off a friend or co worker. The only other brand that I can think of that I have been "loyal" too for any length of time is Coke. I know some people only buy from the same car manufacturer while others stick have stuck with the same brand of toothpaste.