You sound like me Rin. LOL
I have been having that same debate with myself.
I know how to do the Protank rebuild so getting another PT is a given and they do vape good. Esp if you add the airflow base.
I've been checking out the different RBA's and watching videos on the rebuilds to see if it is in my realm of possibilities.
I think I am going to get the kayfun clone from FT. I was all set on the kayfun lite but then saw a video today on the kayfun 3.1 which
sold me on it.
I think if I can rebuild my Igo then I can rebuild a Kayfun.
I would get a Kayfun clone from AngelCigs... They are cheap and from the US so you don't have to wait forever. I think the price is about the same too. Free shipping.
The Kayfun clone I got from FT was garbage.