I think all these new products are just a way to temp us into buying every new gadget that comes out.
I am settling down with my Smoktech DCT
tank which I got for 9.99 from Madvapes. And at home I started dripping again as it always seems to produce the best vape. The replacement o-rings for the DCT tank are like 39 cents each and the replacement cartomizers are around $2.5-$3.00 each. I love them they work great and the replacement cartomizers are abundantly available.