The best place to buy a Rolex watch can vary depending on several factors, such as the specific model, availability, and market demand. However, here are some countries that are known for their strong Rolex markets and where it may be easier to find a wider selection of models:

1. Switzerland: As the home of Rolex, Switzerland has many authorized dealers and resellers, which can create competition and lower prices. In addition, Switzerland has a value-added tax (VAT) refund program that allows non-Swiss residents to claim back a portion of the VAT paid on purchases made in Switzerland.
2. United States: The United States is one of the largest markets for Rolex watches and has many authorized dealers and resellers. In addition, the United States has a strong online marketplace for luxury watches, which can provide access to a wide selection of models and prices.
3. Japan: Japan is known for its strong luxury watch market and has many authorized dealers and resellers, which can create competition and lead to lower prices. Japan is also a popular destination for tourists, which can provide access to tax-free shopping and other incentives.
4. Hong Kong: Hong Kong is a popular destination for luxury shopping and has many authorized dealers and resellers. In addition, Hong Kong has a tax-free shopping policy for non-residents, which can provide savings on luxury goods like Rolex watches.

While these countries may offer advantages for purchasing a Rolex watch, the prices of Rolex watches are generally consistent worldwide. You should buy from an authorized dealer or reseller to ensure authenticity and fair pricing.