The two RTAs I have for best flavor are the Boreas V2 and Troll. I see some mention the Blitzen which I had interest in and should do well, but probably a tad less. From looking at
rta layouts and how the RTAs perform, it seems the characteristics that give best flavor are having airflow that runs straight through the coil to the chimney, having a shorter chimney, and having a dividing partition between the
coils. The Troll and Boreas V2 have all of those characteristics and beat every other
rta that I have. That’s my current theory and I’m sticking to it. lol