bit of a tricky question to answer but i'll give it a shot.
Obviously, battery life isn't as great as 510 due to the size of the battery(REALLY small e cig - same size as a normal cigarette which is really great) Looks great(must take some pics).
Cart size isn't as large as the 510 - doesn't store as much juice, but it is suffecient. Carts come sealed so juice stays fresh and adds extra safety for kids. When you push the cart on, the atty bridge pierces the seal and away you go...no messing about.
Vapour production on this device is good, but again atomizer is a lot smaller than the 510. The 510 really packs a large amount of vapour. However, very sufficient amount of vapour from such a small device, great as an introductory PV.
Usability IMO is very easy with this device, just plug in the cart and off you go. It drips very well, and is very easy to do with the exposed atty, in a way i prefer dripping to the carts but that is just my opinion, i have dripped with all my PVs.
Draw is good, and very consistant so far. Slightly heavier than my 510, but i kinda' prefer that, it feels like your puffing on something. Battery WONT activate when in your pocket, even if you blow a strong amount of air directly into the 2 air holes on the atty, it won't activate, which i love. my other supermini was WAY to sensitive and often burnt out when in my pocket. This doesn't look like this is ever going to happen with this device. 510 can also be a bit sensitive when using auto battery.
Throat hit is a little light compared with the 510, but still definetly packs a punch. Flavour is good. similar to other supermini models throat hit wise.
Also another thing i would like to add....when dripping the juice seems to last for AGES without needing to be topped up, which is a very big plus IMHO.
Overall, for me, this is a great introdctory kit. For someone who wants to try out vaping, i really would say this is the perfect option. It is small, it tends to 'just work'. I have never had that burning taste. However, for heavy vapourers its probably not the most practical of devices.
Hope this helps(was as honest as possible), if there is anything else you specifically want answered please let me know and i'll give it my best shot.
Cheers
