Welcome and glad you joined.I don't need anything fancy,
Agree with you there,I got tired of the fancy istick 40TC and went with the istick 30. Much more cost effective than the 40, I never did use the TC feature. As to spitback, might like to read:
Why does my atomizer crackle&pop and spit hot juice on my tongue? | E-Cigarette Forum
Leaking, Popping, Spitting: How to Fix Your Vape
Always wondered what causes crackling/popping during vaping