So I just got my Ego One today. I got the 1100mah smaller battery, a 1.8ml tank with a 1 ohm coil preinstalled, and a 5 pack of 1 ohm coils.
I immediately stuck the battery on a charger, filled up the tank with some strawberry milk flavored liquid, and let it sit there for a bit while I did a few chores around the house. Fifteen minutes later, I decided to finally give it a vape. Pretty impressive vapor for such a small mod and good flavor from the tank. The airflow is very easy to adjust. I have mine almost entirely closed as I prefer a tighter mouth to lung hit that resembles smoking a cigarette more. Been vaping on it for the past hour and no dry hits yet. So far, very pleased with it and I see myself using this a lot. A welcome edition to my current rotation.
Other thoughts... this thing is small!! Even smaller than I expected. I mean, I already knew it was small but seeing it in person made me realize how small this mod actually was. It is roughly the size of a mech mod in 18350 mode, but slightly skinnier since it is 19mm instead of the usual 22mm. The full "small" version of the One is about an inch taller than my iStick without the tank and the Egrip. I'm using the stock SS drip tip that came with the tank which is fine, but I did try putting some different drip tips on it. Most of my tips seem like they do not fit very snug with it... kinda loose.. so I'm just gonna stick with the stock tip for now. Another thing is when I opened the tank for the first time to fill it, the coil was stuck to the chimney/airway inside the tank instead of being screwed onto the base. Not a big deal though, I was easily able to remove it with my fingers.
I'm about to take care of a few errands around town so I'm gonna bring the One with me for the ride and get familiar with it. I'll report anything new if anything worth mentioning comes up. Here's a few pics for size comparison (will have to upload from Tapatalk on my phone). I have small girl hands so if you're a guy with big hands, this will look even smaller in your hand.