Yeah I agree never heard of "high grade". Whenever I did buy Kratom a few months ago I would get the Bali strand, it's the most cost effective. Somewhat stimulating at lower doses <3g and nice euphoric relaxation at >6g. For some reason though even at high doses I couldn't sleep on it. I couldn't take it past 6:00pm and hope to be asleep by 1:00am without loads of Benadryl. Kratom is great and have shown it to many people who need pain medication but can no longer receive prescription meds.
I no longer use it though as every time I had it in my possession I couldn't stop using it. I had a Cap-M-Quik machine to put the Kratom into gel caps and it made it far too easy to use. It is very addictive if you don't immediately set yourself up some guidelines for using it (ex. once or twice a week max). The gel caps for me were the best way to dose. Just tossing a load of powder in your mouth and swallowing can get nasty at times but it gets easier with practice. I've made tea a few times but didn't find the effects worth the hassle, seemed less potent. Super cheap and effective plant overall though.
Just don't forget to ask yourself why your using it..
"Existence itself may be considered an abyss possessed of no meaning. I do not read this as a pessimistic statement but a declaration of autonomy for my imagination & will and their most beautiful act of bestowing meaning upon existence itself." -- Hakim Bey