PS: I have heard that the TFV9 coils are very good and that all the "new" Smok coils have upped their game so I'll give them a try in the new tank/kit that's just been delivered. I'll find out for myself.
The tank itself is very good, the only doubt I have had is the reliability of the top seems a bit shaky but I have had no problems in the relatively short time I have used this tank. As for the coils well I haven't used the Smok ones due to my previous experience of Smok coils and I've been using HellVape, that's the thing it is compatible with so many coils, which is great and makes this tank( any of the baby beast v1 type coils). Large capacity, good price and excellent service as always