(Metal, wood, bamboo, plastic, etc.) crochet hooks are made from a range of materials including aluminum, plastic, acrylic, wood, bamboo, steel, resin and rubber. Which material is best is subjective and depends on what you find the most comfortable.
Are ergonomic crochet hooks better than regular ones? Usually ergonomic hooks reduce hand pain and fatigue and allow for better control. Again, which handle suits you best is completely subjective.