I just ordered an EHPro Kayfun 4 clone to try out. I was scared originally because of all the pieces, but I don't have to take apart the whole thing every time. Accessing the build deck without having to drain it will be more convenient.
I've been looking for a tiny bit more air flow. I tried a subtank and a melo, but the flavor just isn't there. This Kayfun 4 supposedly has a little more airflow without sacrificing the flavor.
That's gonna be my last vape purchase for a bit.
Edit: I canceled my Kayfun 4 order. I like EHPro a lot because they did my KFL+v2 so well, but the Kayfun 4 isn't reviewed very well.
Also, Rocky Mountain Vapor had it for $1 cheaper than the ebay seller, and I wanted to keep the business with them if I ordered one.
The Tobeco version is a couple of dollars cheaper, but I saw someone on this forum post a picture of theirs that had rust building on it. Rust? I dunno if I want to chance that.
Apparently the flavor is about the same, but it's more convenient because you can pull the deck out without disassembling the whole thing. Also, you can adjust the air flow to be more open, but it's hidden under the 510 pin.