I feel like I have learned a ton over the last few days regarding how to use the Aromed effectively, beginning with the fact that it seems I can now get good results with very small loads. (I'm still not completely sure I've made any progress, though.)
Now that every load lasts me only one session, I have begun preheating the herb holder before each session by turning on the Aromed and taking some draws through an empty herb holder. Once the glass is nice and hot, I add my herbs and begin the session. This way I don't have to worry about the glass absorbing heat I want for my herbs (because the herb holder is already hot when I put my herbs in it).
Since I don't remember reading about anyone else doing it this way, here's why I started doing it: I don't want my herbs to be preheated. I'm pretty sure it doesn't do my herbs any good to sit in a preheating oven for a couple minutes, then for the herbs to remain in the preheating oven during at least three fruitless draws.
To me that's just like trying to bake a pizza on a cold stone, in a preheating oven. If you do that, you'll end up with an edible pizza, but it probably won't be very good. If you want to end up with a much better pizza, you put the stone in the oven, then preheat the oven, then leave the oven at full baking temperature for about an hour before you even start baking the pizza. That way, the pizza will start baking as soon as you put it in the oven.
Baking cannabis may not be the same thing as baking pizza, but I feel like it's close enough for me to use this analogy, at least within my own mind.
I guess the reason why I never thought about this stuff before is because each load prior to a few days ago lasted me multiple sessions.
If anyone disagrees with anything I just said, or if anyone wants to play devil's advocate, please do. I realize I am still very new at this, and that I still have a ton to learn.