Liking 540 on my Auber with 3 terp pearls in mine. Extensive testing has been done since I got my coil and it’s been on 12+ hours a day
I can already tell I’ll be picking up another 25mm opaque for my coil. Like it’s been mentioned, one to soak and one to use.
I have been getting mine clean in about 10 minutes. I’m using simple green in a baggie floating in an ultrasonic cleaner. 3 minutes in that gets the crud off the bottom and another 1 minute in a baggie of ISO and that gets most of the funk off the sides. Anything left I scrub with baking soda- works great! Then I use that baggie of baking soda on the terp pearls and they come out spotless.
So you can definitely get them clean quick, but I can definitely see the appeal of having two.
I mean I have two torch bangers for that reason ;-)