KAVA is awesome but it has a very horrible downside!! (Liver damage/failure) So please be very careful with that powder!
It's also addicting. But the differences are Kava is similar to the benzos, while Kratom is way more similar to opiates. (I drink Kava tea, but it's just premade tea bags)
I mix my Kratom with Orange Juice. (tastes way better, and works better.) Hope you have a scale for that kava! And dosage varies per person.
I start low and work up on anything I take because who knows how it'll effect me.
I'm sorry man but your information on Kava is a bit inaccurate.
First of all, I have never heard of Kava causing physical dependence, in fact it is one of the rare substances where over time you actually need LESS to get you equally high rather than your tolerance getting higher.
This actually causes people to use SMALLER doses the longer they have been using it.
Now, I am not going to claim Kava can't POSSIBLY cause physical dependence because my random guess is that it probably can over time, but in reality almost all substances are at least A LITTLE bit physically addictive in that if you use them too much your body starts to believe it needs it, so probably Kava can be a little addictive, but I've never heard of anyone saying that they are having trouble with Kava addiction.
At the very least it is probably one of the MUCH less addictive substances out there, certainly FAR less capable of causing physical dependence than Kratom.
Also, the most recent studies of Kava seem to strongly indicate that powders which only include the ROOT do not cause liver damage but rather it is the other parts of the plant which cause liver damage and most QUALITY Kava vendors only make powders with the root so if you know your vendor is a good one then you shouldn't be causing yourself any liver damage by drinking their Kava but I'm not entirely sure how you can know whether or not they only use the root other than just trusting what the company says if they say they don't use other parts of the plant.
Maybe someone else has more info on how to be sure your Kava only includes the root.
As for the OP:
Kava is a VERY mild substance and most would agree it is more mild than Kratom.
As far as the highs are concerned I've never actually gotten "high" from Kava, nothing more than a VERY mild relaxing buzz, kind of similar to maybe like some very strong chamomile tea or something like that.
I know that I haven't had the best Kava that is out there and want to find some quality Kava and find out if it is in fact possible for me to get high off of it, but a large percentage of people who have used Kava find it to be unimpressive.
Kratom on the other hand is one of if not my favorite drugs.
It feels sort of like a combination of low dose Vicodin and some strong coffee.
It is unusual because it can feel either a bit like a sedative or a bit like a stimulant.
It is relaxing like all opioids but it also gives you energy and puts you in a good mood and kills pain.
Unlike Kava though it is more addictive and something that you will probably get addicted too if you use it more than like 3 days a week.
Hope that helps.