More than any other kava I've had, DNB Fijian waka makes me feel really great the next day, for several hours. I have no idea why this is.
Love their new Vanuatu, btw. Some were disappointed because it seems "weak" but it's just a mild tasting heady kava, not a typical Vanuatu grind. More like the RoH Samoan than anything else. For what it is it's really good, and at the price, a steal.