I have a Cuboid, It has TCR but i have no idea how to use it!
It also has a setting for SS in temp control!
As a non smoker ... who enjoys the occasional cigar, is vaping something I should give a go?
Yes, definitely. My two friends who used to smoke pipes and cigars are now full-on converted vapers, happily chugging away on SubOhm tanks and now even drippers... Both seem to enjoy the beverage types of flavour, especially the Alchemy range of tea flavours.
The one thing I dislike about cigars is the lingering smell afterwards, do you find vaping leaves a smell in the room/car?
Only if you keep it tightly shut and vape heavily for long periods. It's more of a general sweetness than an actual scent, though.
Would I be right in thinking that closing the airflow slightly would produce less vape?
Yes, no, maybe... It depends partly on the tank and the coils being used, as well as the setting.
Airflow is a factor, but closing it too much can choke some coils and you'll flood them.
SubOhm coils and drippers need massive airflow, both to get the big clouds and to keep the coils cool.
Lastly - My current tank, same coil, same juice, same airflow, but the vape at 45w is a small puff compared to the outright fog at 75w.
And finally, the 0 nic juices, do you find these taste as good as the ones with a higher nic content?
Depends on the juice.
I find a lot of the flavours I like are better with a bit of nic, especially the tobacco ones.