I gave a Kayfun V4 away last night at work. Have a friend who wants to learn how to build coils and I figured the best way to teach her is if she had something to build coils on. She was amazed how 15 watts on a Kayfun blew her mini nautalus away

I took an Orchid V4 and build dual coils on it and tried it on a Telsa Invader. Unbelievable flavor and cloud delivery and no matter how I wick it, it constantly leaks. I can sit there for a week with a full tank and not leak a drip and the moment I start
vaping on it I get scalding hot juice on my hand. Part of the problem is poor design. The chimney is just barely long enough to go through the oring on the top cap. With the Orchid V7 they adressed that problem and totally redesigned that part where instead if slipping through the top cap it now screws to it.
When I received my Orchid V7 i was physiqued on it. Build the dual coils for it, wicked it and filled it with some Mothers Milk I picked up just for it. Put it on the Telsa Invader and fired that bad boy up. Just like hitting a dripper. Awsome flavor and the same as the V4, leaked like a sieve as soon as it got hot. Havent touched it since but when I have some time to experiment I want to play around with the wicking and see if I can make them usable. The performance of them is just too good to give up on them.