I received these today in the morning. I filled one up and then i let the juice wick for two hours.
The wicks are at the bottom and the heating element at the top, that means that you need to let it wick the juice to the top so that you don't burn the wicks. Also there is a wick in the middle tube where you can direct drip liquid(3-4 drops, i flooded it when i dropped more but it's easy to blow it out and clean). You can drip and vape this way without filling it but i filled it up because that's it's purpose
It holds around 3ml in the tank and 3-4 drops in the middle tube. I let it wick for 2 hours and about 1/4 of the tank is empty which means that the wicks are working well.
It performs better than my vision ego so far, much easier to draw on these, plus i use my own drip tip. The throat hit, flavour production and vapour production is similar to the vision ego. The vapour is nice and warm, the top and the drip tip get warm after a few puffs. I use it on my ego vv set at 4.2 volts(3.9 under load). I read somewhere that people use this at 6 volts. I will be able to try it at 4.8 when i have my ego twist.
So first impression is very good. To be honest though i don't really mind the tight draw on the vision egos because i got used to it. The price difference is significant so i will only buy more of these if they last longer than the vision ego. My oldest vision ego is 40 days old and still going strong. If it beats that i will be happy
I took some amateurish pics with my phone. I will let you know how it performs after i use it for a while