OK I picked one up late this afternoon. Let me start by saying I have never used any kind of rba before
The first thing you need to know if you're getting one. Don't do what I did and take the plastic tube clear off the bottom assembly. Getting the wicks back in was tricky for me since I had never messed with one before. Hold onto the tank and just pull out the top part which includes the air tube. Then you can drip your initial ten drops of
juice onto the wicks. Then you can put the top part back in and tilt it to the side when it's almost in and then fill the tank. Then you can slide the top cap in place and you should be ready to go. I would also say here to resist the temptation to over saturate the wicks. Stick to the ten drops. If your first hits seem a little dry then you can take a couple of unpowered hits to get more juice to the wicks. Don't overdue that either or you'll flood the wicks.
Now that that's out of the way. I can say that this unit is easy to fill and should be easy to change out your juice. It's producing lots of vapor with real good flavor and TH. It got steadily better as the evening progressed. Probably due to the break in of the new coil and wick. Overall I'm very pleased with the performance of this rba and it is definitely something I will get a few more of and continue. Since I was able to get the hang of this I would have to say this is top tank rba for dummies. Seems almost foolproof. Of course my real test will be if I'm able to change the coil out OK. The only problem I had was over saturating the wicks and flooding it out the first time. Once I got that cleared up it worked flawlessly. The flavor is definitely better than the best tank carto system I've used.
Sorry to be so long winded, but I thought by sharing my mistakes, it might make it a little easier for someone else.
Oh, I noticed that Vapingzone has the replacement coil/wick up on the site now. They just got the 2.5ohm in today they will have the others in the near future. I also tried this on my Vmax, YJ Lavatube, and VZ VV-3 and I started around 3.5v and am already up around 4.4v with the 2.5ohm coil.