Received my Milaana2 a couple of weeks ago and have used it exclusively since its arrival. The Solo, E-nano, and Mighty look to be redundant since none of them offer the convenience, flavor, or ease of use delivered by the Mi2. I am a purely at home, individual vaporizer user, and the on-demand unregulated nature of the Mi2's design totally fits my requirements. I have very limited dexterity of my hands and truly appreciate the simplicity of using the Mi2. It delivers incredible flavor, the vapor is nice and cool, and it is easy to control the amount of vapor produced. The learning curve is almost non-existent since you can easily tell what is happening to the material while you are taking your draw. The things I find inconvenient are those inherent to all convection vaporizers, at least it seems to be the nature of the beasts. To achieve complete and thorough vaporization of the material it has to be stirred, and turning the stem holding the material after a couple of draws is required to give it an even vape. Still very minor requirements to get great tasting, cool, copious vapor to help you through the night and day. The Mi2 is very efficient, I get almost a dozen draws from a very lightly tamped top hat screen load, though of course that is very subjective to my lung capacity and cough reflex. I have used LG HG2, Sony VTC5A, and Sony VTC6 batteries and cannot really tell the difference between them as to how the Mi2 performs, though it seems the VTC5A has the least longevity of the three. I may try one of the Samsung's but I doubt it will be any different. One thing I have noticed is the heat up time is a bit longer than most have suggested. Pressing the button for a 10 count will produce a light first draw, less than 10 produces mostly flavor and no visible vape on my exhale. After the material has been heat soaked a 3-5 count before drawing and releasing after you feel the vapor hitting your throat gives a nice amount of vape. I do feather the intake hole when vapor feels a little bit light and it kicks up the volume nicely. I have not come close to combustion. In my humble opinion, the Milaana 2 is head and shoulders above the other vaporizers I owe. Fit and finish is high quality, though the battery compartment and hatch could definitely benefit from some modification. It is smaller than the original Milaana and not as free flowing, but I think those are positive changes and make the Mi2 superior to the original. I hope Ryan and RBT can continue producing convection vaporizers and be supported for the innovation and quality designs.