My
fastech kayfun has perfect threads. I don't know who made the other 2. Stop bashing the Chinese made kayfuns. I bet most are as good as the originals.
Honestly, I have an original R91 and KFL
And 2 clones. Both clones are just as good as the authentic. BUT, the clone I have are from 2 of the 3 companies that are widely accepted as being that high a quality and could come out with there own products and be successful at it.
The FT clones that I've tried and seen; do in fact vape as well. But the consistency I'm quality is not there.
No one is saying that the Chinese clones lets can't make a good product and any vapor that says they have NEVER bought a clone product is probably jot being 100% truthful. Most of us openly state we buy both. However, the majority of Chinese clone makers (not all) lack the consistency of upholding the same quality or the authentics.
In other words, yeah they have some high quality stuff roll out but not consistently and they don't do the same extensive quality control check as the authentic companies do.
In the end that's a large portion of what you're paying for when you but the authentic.
That and the simple fact that German factories buy and use a much higher grade of steel than Japanese. It's always been that way. The proof is on the scale.
I hope you don't take this the wrong way, as I also stand firmly behind three of the clone makers and buy there products fairly regularly. But I'm just sayin it the way I see it.
A 14 dollar fasttech clone doesn't have the same quality as an ehpro, hcigar or artemus.