Several come to mind for me when I think of a classy chronograph:
- Zenith El Primero
- Breitling Navitimer B01
- Montblanc Heritage Chronograph
Really depends on your budget. The Zenith and the Breitling are both around $7k. The Montblanc is more reasonable at just over $4k. If your budget is a little bigger, you may want to consider the Omega Speedmaster '57 or Chronoscope. Both have a bit busier dials, but it sounds like that's what you may be looking for.