Omega
2. Longines
Longines
3. Rolex watch
Rolex Watches
4.tag heuer
Tag heuer
5. Tito
Tudor
6. Vacheron Constantin
Jiang Lu
constantan
7. Patek Philippe
Philip
8. Cartier
Cartier
9. Breitling
Breitling
10. Radar
Rado.
The above is the latest world ranking in 2008. I hope I can help you.