So after vaping with it for a good while, it seems very nice, but not perfect. Charges in about half the time, and the charge seems to last at least double the time, as compared to the AIO box. Draw is non-adjustable, unless I'm missing something, and very easy. You can get yyyyyuuuuge clouds from this thing - like what I see folks gets with fancy "mods". It imparts a tiny bit less juice flavor in the hit as compared to the AIO, I suppose because of the completely different coil system. My only minor gripes so far are, you have to pop out the coil assembly to fill the reservoir (but capacity is large at over 8ml), and the reservoir window that shows the juice level is not visible from the outside of the device when it is put together.
*UPDATE*
I can definitely kill the battery in this one before I kill the juice reservoir, so that's a plus. But I have to share more on the flavor thing. The coil system is a completely new, novel design, and while efficient as far as cloud generation, it does not give the same flavor hit as Joyetech's "traditional" design coils. Here's a pic of the new coil: