In my personal experience, rubberwood makes for an excellent chopping board. It's not only durable and resistant to warping, but also less likely to dull your knives than harder woods. Moreover, rubberwood is environmentally friendly, being made from sustainable resources. However, it's important to note that it does require proper care, like regular oiling, to prevent cracking. So, if you're looking for a balance of durability, sustainability and knife-care, a rubberwood chopping board could be a great choice.