Received a 4mm SS one this morning. Purchased because a friend reckoned I'd enjoy it as I like FeVs.
For ME .... and I know we're all different, with the two largest Air Pins in, 2.5id spaced Coil of .30 Kanthal and using a 50/50 liquid at 12.5 watts ......... Not quite what I had hoped for. Too tight, BUT I did say "For Me". So being adventurous..... Took One Pin out all together!!!! Better, but of course now it has become pretty turbulent (whatever that may mean to you?)
I think I'll get the Dremel to the Large Pins and see whether I can improve on things. I also think I also need to experiment with Coil Height a bit? I set it up as shown in various You Toobs and I'm not really getting anything NEAR to that which a FeV gives me in ways of Flavour.
Early days I know, but at the moment.... Nah, not quite what I enjoy.
Aesthetically, it's an OK looking RTA I guess, but again that's terribly subjective.