I once worked for a store that sold beautiful cutting boards. We'd tell customers to designate one side for actual cutting and the other for serving. That way, they could remain beautiful and functional.
I think it's important to have a ho-hum cutting board for your onion and garlic chopping. Those scents don't easily come out fully, so I use a cheap plastic cutting board for that kind of kitchen prep. For other not-as-stinky chopping, I use a few larger wooden boards that I've received as gifts over the years and that double as serving pieces for bread and cheese or chopped vegetables. Here are a few favorites:
• Round Ash Wood Cutting Board - $18 from Terrain
• United States-Shaped Boards - $19.95 - $39.95 from UpWoodCrafts
• Ed Wohl's Birds Eye Maple Cutting Boards - $94 from A + R Store
• Rustic Walnut Cutting Board - $46 from Etsy seller GrayWorksDesign
• Hickory Cutting Board - $36 from Brook Farm General Store