If you are about to spend a huge amount of money anyway, then getting an Apple watch would be far better. This is because it will give you a lot more functionalities other than simply telling you the time. However, one downside of the Apple watch would be that you might have to upgrade it every two to three years whereas a rolex watch can be used for a lifetime.
In case, you are not into gadgets and tech products, then getting a rolex would be a better option. Both are however, different products and I personally would prefer an apple watch.