Yeah, I didn't like the taste of smoked concentrated leaves.
In fact, harmalas are in salt form in the leaves, and that tends to give me headaches...
As I still want the presence of caapi in my changa, I use shredded caapi and harmaline extracted from rue.
2 friends of mine swear by my most loaded changa : 1:1:.5 (caapi/DMT/harmaline).
I like them all, from .15 to .5, my favorite for now is .25.
I didn't know about the potency of the caapi leaf though, thanks Jamie !
Oh and BTO, 10x concentrated leaves is physically impossible
3x is the maximum, at least without considering chemical extraction.
If you want a more full spectrum extraction from rue (including "secondary" alks like vasicine), just skip the Manske, do it with the Gibran2 Easy caapi extraction tek (here in the wiki).
Many people seem to prefer the full spectrum alks indeed.
(I have just finished re-mansking 15g of rue... lol, I guess I have to extract my last k of rue without manske now
)