If you’re worried about lifetime with coils you’re worried about cost, and if you’re worried about cost with cartridge coils you should probably be vaping a rebuildable. Unless you can’t handle the black goo of course. Some can’t.
I'm not worried at all my friend I have 5 different mods and in any moment each and one of them have 2 boxes
The problem is that no matter my vaping habits are the same day by day but the tw-20 as opposed to other coils have a life of his own and believe me I have much experience with everything that is regarding to coils life time in any habit.
I used to use the VM5 coils, but when they brought out the TW range of coils I started to use the TW20 coils, as it has better flavour and does last a bit longer than the VM5.
There as a new serious now of the vm6 its looks exactly the same the only different is the matel frame on the cotton out side its fully open and I hear the flavour is awesome in other voopoo tanks not on the u force there are higher W from the vm but I will give them a try because the u force tank because of his 360 degrees air flow and of course a good e liquid should give a good flavour as well if we never try will never know I guss
