I don't really see that much of a resemblance. Some people say that if you took Havana, and removed the tobacco & bay rum and replaced those notes with incense & musk, you would have Montana. While I agree to an extent, those differences in notes completely change the fragrance for me. Montana is a good scent, and I don't see why you couldn't have both in your wardrobe. For me however, I think Havana (especially Havana Reserva) is a special scent that I will do my best to never be without. Yes it's expensive, but in my mind, I consider it a niche fragrance (which it really is at this point) that I'll gladly spend the extra money to keep in my wardrobe... Some people enjoy Creeds & SL's, I will enjoy Havana!