Finally managed to stumble across an active buy button for the Hellfire Sentinel and got it up fired up today.
Very well made and fairly easy to coil, even for a newbie like me. I put a SS spaced fused Clapton in it, placed very low to ensure the airflow hit it. The fact the air comes in from the top initially means over squonking is neigh on impossible. I have been using Souls as my go to attys quite a lot recently, but found the flavour just as good on the Sentinel.
Not inexpensive, but glad I nabbed it

. Be interested to hear how others are getting on with them or other Hellfire attys?