I got my Oumier VLS from
Heaven Gifts a few days ago and so far I've been liking it. The whole thing breaks apart nice and easy for cleaning and building, the o-rings fit well, not too tight or too loose. The build deck is kinda cool and easy to build on. The build deck is reverse threaded and screws into the base which makes it much easier to wick vertical coils. I did a dual vertical coils build with 28ga(I wanted to use 26ga. but I had run out) 316SS, 6 wraps 3mm id and reading at 0.42 ohms. I didn't have any problems with the screws cutting through the light gauge wire. There's plenty of room for most builds, but it may be a bit tight for any of the larger complicated coils. Wicking was really easy thanks to the cut out on the bottom of the build deck, it also makes a nice juice well.
The airflow works better than I expected. There's no whistling or excessive noise, it's quite smooth. I've been vaping it wide open and it has just the amount of airflow for me. I think the amount of airflow would be plenty for most people, except those that like extremely airy RDAs. With a dual vertical coil setup I was a bit concerned at first that air wouldn't hit the coils sufficiently. It actually works well because the cotton at the top of the coils direct the air around the coils instead of straight out the top. The flavor has been very good, almost as good as my Drop, which I love. I'm getting a nice smooth dense and saturated flavor.
I've been using it primarily as a BF RDA on my VT Inbox and it squonks great. There's no problem to over squonk, unless you're bound and determined to over squonk, even then you have to be trying to. It works nicely as a straight dripper too. Dripping from the top, it saturates the wick and basically paints the coils as it drips down.
The one thing I don't like is the reverse threaded deck. If you try to adjust the airflow while the top cap is on the RDA, it can start to unscrew the deck from the base. You have to line up the air holes and place the top cap straight on top without twisting it. It was a little annoying at first, but once I decided where I like the airflow it hasn't hasn't been an issue.
Overall, I really like it, I like the dual vertical coil setup. It would work great for a horizontal or vertical single coil, but I don't think dual horizontal coils would be very good though.
Here's a few pics