>>92235613depends on your budget. I highly recommend buying one used/second hand that is older but still in good condition because watch manufacturing as a whole has gone down in quality. I'd still consider an older Rolex Datejust the gold standard and a good investment but for something more budget vintage Seikos look extremely nice and are high quality.
If you're in the market for non-Rolex higher end stuff Omega and Cartier are fantastic watches too.