Just got my Sherman, it's hands down the best RTA I ever used!
I thought the Ammit was the best for flavor that I've used until I received the Sherman.
Super easy to build and wick, I saw a few reviews saying it's prone to leaking, but I haven't had a single leak.
I filled it and as soon as the top cap started screwing down, I turned it upside down, finished screwing the top cap in, opened the airflow and screwed it into my mod.
Flavor is even better than the Ammit, I'm using the same 3x26/36 PT N80 Aliens @0.11 ohm 120watts, wicks like a dream, also even better than the Ammit, not even a resemblance of a dry hit even when chain vaping @120 watts.
The cone shaped drip tip is the most comfortable drip tip I ever used.
Not cheap, but worth every penny IMO.