Nov 13, With cutting-edge technology and quality to boot, vape your cannabis flower in style with these excellent portable dry-herb vaporizers. Over different portable dry herb vaporizers tested. Check out my top picks for the best portable dry herb vaporizer in by price and categories. Jun 22, That's why we've compiled a list of the best dry herb vaporizers .. Most portable vaporizers are powered by an internal, rechargeable battery.