I have heard no reports of anyone's tank cracking from
juice in the authentic Erlkonigin thread and I have been involved with it since very early. Concerning durability, the ErlK site sells SS tanks. Also, the ErlK can be disassembled to rebuild/rewick without emptying the tank.
Coil mounting on either device is a breeze. Wicking is a different story entirely in my experience. The ErlK requires more finesse.
I ran the SQr on my P2.5 and it was huge! I run my ErlKs on Vapor Flaks primarily and it's about the size of my Stingray X in 18650 with a Mutation X mounted on top. I also have a WAE II that I run the ErlKs on as well at times and it is a little longer but I got a nano kit and think it is perfect for the WAE II.
Here's a recent build on an ErlK clone I did the other day:
http://www.e-cigarette-forum.com/fo...lkonigin-clone-comparison-7.html#post14496877
Sorry, but I don't own a Trident so can't give an opinion concerning the AF to that.
If you ordered an authentic, they include a posi pole spacer with it. It is taped onto one end of the box so now you'll have two.