Good work, interesting read and very informative.
A big vote for the machine here. I can reliably have one hit breakthrough on 27mgs in the machine. It's cheap and easy to make, and quite easy to use with a little practice.
I'd really like to try some more interesting ROAs as well. DMT Ejuice and dabbing look interesting, although I'm not sure when I'll be able to try those. I have a dab rig, but don't really like mixing my ganja tools with my DMT tools for some reason.