Kind of strange in how I am such an Innokin fan owning: MVP2,V3,EP,134 and SVD.
Yet don't use any of their toppers - in drawer - some new - some tried/cleaned/shelved.
IMHO - manufacturers have finally really done a great job with intelligent battery management systems for vaping.
Toppers - not so much - high maintenance - kind of work well for awhile. Granted toppers are the technology challenge and recurring money in flux for manufacturers in our market.
I have used most every brand to try and match form/fit/function with my battery units - I have some which are acceptable for now - tomorrow who knows.
My RDAs are low cost maintenance but not really all that suitable, to me, for out and about.
My RTAs, kayfuns/taifun/fun fun fun etc. - work well until I get a seal issue/insulator issue - sometimes parts are available - mostly not. Not a great choice for out and about.
I still return to my tried and true - sometimes contrary always small leaking puddles - EVODs for out an about with my taste V3 and EP or my smoktek mini/micro dripper if I am up to carrying juice - on occasion.
So, here I am returning to my teenage years when I was an amateur ham operator and build my own stuff - winding coils (inductors) with a smile on my face
