My sister, who lived in Alaska, bought me my first Ulu chopping bowl. It is the best thing for chopping onions and other veggies because the pieces stay in the bowl. The chopper is easier than a knife. I've given it as a gift to many people. If you only chop vegetables with it, you can probably get along with only one. However, the onion or garlic smell tends to stay in the wood, and doesn't make it a good vessel for chopping nuts, for instance. If you want to chop other things, get a second Ulu for that purpose.