I'm happy to see this thread explode with so much useful information! I'm a big believer in Kratom these days. It's helped me keep out of trouble with other substances...and it's helped my mood remain positive during some difficult days.
My main source for Kratom these days is Green Leaf Kratom. They seem to have pretty fair prices in my experience. As I've said earlier, I love their Maeng Da and Vietnam for "uppers". Their Red Relief and Pleasant Green Bali Supreme are excellent for relaxation as well, although the latter is a little on the weaker side of things. I have to say that I do find the difference between strains to be subtle.
I've also ordered from The Kratom King. Honestly, I've found their prices to be a little higher than GLK, though the quality of their stuff is pretty much on par.
I personally I feel like one of these is absolutely needed to meter out a consistent dose:
http://www.amazon.com/American-Weigh-0-01g-Digital-Scale/dp/B0012LOQUQ/ref=sr_1_1?ie=UTF8&qid=1416181719&sr=8-1&keywords=american+weigh+scale
I personally have one of those, albiet in the 1000G capacity version. The smaller capacity scales will be more accurate, though. The 1000G capacity is a little overkill for weighing out 6 grams at a time.
I'll usually grab a couple of ounces of orange juice, throw the kratom in there, let it soak up the liquid for 5 mins, and down it in one go. I also have a capsule machine, though, and those are very handy if you're out of the house. I generally fill up the "00" size vegetable capsules, and can fit about 13g in 24 capsules. It is a little labor-intensive, though. It'll save some money in the long run, but it takes much more time to make the capsules.
I hope that helps some of ya'll /default_smile.png.