My Tornado Hero arrived yesterday and all in all, I think it's a really good RTA.
I like the sidefillport, although the one on the OBS Engine is better. But it works really well.
Building on it is really easy. From the start, I had no problems with leaking or dryhits. I first used the provided Aliencoils, which came out at 0,17 ohms, and the precut cottonstrips, but replaced them with 26/32 Claptons at 0,4 ohms later. But I spaced them out, so that they fit over the airflowtubes.
Flavour and cloudproduction is really good. Is it the best flavour I've ever had?
No. But for an RTA it performs really well and I think it is on par with my Engine.
The only real con on this tank is, that if you close the airflow, it gets really noisy. But I prefer my tanks wide open anyway.