I know , Vapeluvr. But i just try to avoid a possibly unnecessary purchase by asking ppl who used zerkers/dvarves but also fev/spica. The hype on fev is very high right now.

I don't really get how it works. Everyone is trying to plug the remaining half of the chamber with pei/metal ( like in Parvum, which i have) to gain taste. Not the fev. you still have one 1/2 chamber just sitting, if you run it in one AF only...