Have the first TA, latest TA and the Tempest.
Stunner to me is a bad copy of the TA.
I would choose the TA over the other ones.
The TA is so much more forgiving, hard to combust.
TA owner have the new version for a little while now, love it. Normally I use the Ispire Wand but this thing is so forgiving when heating almost impossible to combust, unlike the Tempest.