Here's an interesting link:
http://www.wristwatchweblogs.com/ind...rands-of-2012/
Most popular brand in US and Europe: Rolex. Admittedly the list stops at 50 and there are literally thousands of brands. Remember, the list is about popularity. It doesn't have anything to do with specific watches. Indeed, there's not a brand listed that doesn't make at least one watch I like. And there are plenty of brands that make outstanding watches, for example, FP Journe or Lang and Heyne.
All the best.