Just another echo of the popular opinion, Paradise Kava may not be the cheapest but:
1) Powdered Kava quality is top notch - I have tried both the regular Hawaiian & the (old) Fijian and they are both fresh, strong & pleasant tasting in their own ways (yep Earthy is a good way to describe that smell)
2) The CO2 Kava extracts (I have tried all but the coconut, even the double strength) are truly innovative non-solvent (the ONLY way to go, INMHO) kava concentrates and they are strong & perfect for travel/emergency kava.
3) Paradise Kava actively supports research in the safety & properties of Kava, something that is greatly needed in this FUD filled world. I don't know of anyone else who has actually has had their kava tested in any capacity.
4) It is a backed by a real person who actively posts on this board, just check and see who fits this description (there are a couple) and you will find out who I order regularly from.
In short for things I put in my body, I don't mind paying for better quality - two big thumbs up for Paradise Kava.