This little guy is great for carrying out of the house. The juice capacity is more than enough to last me through a whole day at work, and the battery is usually good for that entire time, too. Luckily, it charges quickly via micro USB. The .5 ohm coil is a fairly open mouth-to-lung pull, and the .2 ohm coil is a very comfortable direct lung draw. The replacement coils are pretty cheap, and usually last a couple weeks.
AN IMPORTANT TIP- YOU REALLY NEED TO USE A JUICE THAT IS AT LEAST 50% PG. The wicking capability of the coils can't really keep up with a thicker high VG juice. I started using this thing with my usual high VG juice, and I was getting a burnt taste within a couple hours. Other than that, I'm very happy with this purchase.