I received 2 of these Phoenix and I just have to say, they are the best thing on the market today, head and shoulders above anything else I have ever tried. It constantly and reliably delivers a strong, well wicked hit each and every time you draw, fill after fill, chain vape to your hearts content. Great flavor, lots of vapor, it is just perfect. It cleans in a snap and works as good as new afterwards. No leaks, period, no dry hits unless it needs cleaning, and it's easily primed by gently squeezing the tube in case you just need to get through that last fill before cleaning again. This thing is hands down an incredible piece of technology, it is everything the Sapphire tried to be but wasn't, I see no need to buy/use anything else besides Phoenix ever again. This is my holy grail.
I will say I think a disservice to users has been done on this thread to advocate filling it all the way. People need proper information on use or else they will make common user errors and mistakenly ditch the product, which would be a serious shame in the case of the Phoenix. It needs a vacuum to function properly and filling only to the line below the wick and no further is very important to create that vacuum. There must be an air pocket in there. You can fill it to the line or less and it works just fine, perfectly even. If you try to fill it all the way it will dry hit unless you prime it by squeezing.
I wish GotVapes would include more user information on their site for products like this because not everyone will bother to come here and read up on these threads, and you really have to in order to use the products. 100+ pages is a lot to go through for your average recent non-smoker. Most people are not tech-inclined and will not bother to fiddle with things. With Phoenix, they don't have to, they just need a couple user-friendly tips on proper fill and basic cleaning. If GotVapes had info on their site, it would be useful for newbies trying to quit, and that's what it's all about. Kick it to Big Tobacco, GotVapes, but you have to hit them where it hurts, Mr. and Mrs. Blue Collar Average Joe.
Best of luck, what you're doing for the vaping community and for tobacco users everywhere is commendable. Fantastic product.
added bold to section that I thought was excellent point and very good advice - danno