i have both the tobh and stillare. I would say if flavor is your thing, get the tobh. If you want LOADS of vapor, get the stillare. While the stillare still produces good flavor its not as pronounced as the Tobh, probably due to its chamber being much larger than the Tobh. Both are great vapes, but the stillare is literally a nuclear fog machine. Im building it at around 0.4 ohms 26g dual coil. My tobh is sitting @ 0.35 ohm 24g dual coil.
The stillare has way way way more airflow. Although im sure you could mod a Tobh to also have huge air slits.
The way you control the AFC on the stillare is far superior than the Tobh. The stillare all you do is give it a slight twist, Tobh is kind of a struggle because you need to line up the holes with the metal tabs inside the chamber. But to me this is not a big issue as I usually want the most airflow I can get and always have both attys fully open.
I dont prefer one to the other, since I like them both. But i would probably pick whichever one is more aesthetically pleasing to your eyes.