I have to say, while the 'I vape at 350w for 0.3 seconds' thing happened. I've got a tfv8, not had it too long but used the 4 coil and the rba deck on it and it's great, no faults, no leaks gives me lots of vapour and the flavour (especially from the rba deck) is the best I've ever had. Granted the threads are a bit meh, but they haven't caused me a problem, I'm just picky about threads. However, I have no desire to buy a Tfv12, from the reviews I've seen, it's really not that different in terms of vapour production to a tfv8 and worse for flavour.
Let's just remember that people want different things on potv and there's a fine line between jumping on a band wagon and being an outright knobhead to someone and offering advice and assistance