I bought a Njoy Npro from a local smokeshop and have been VERY happy with it. I broke an atomizer fiddling with it and NJOY sent me a couple for free ( I ordered more just in case). Now I have 4 batteries, 4 atomizers and 2 chargers.
I gave up on the little cartridge things because I overfill them. I drip 2-3 drops of juice right into the middle of the atomizer and that seems to keep me going for a couple hours (between all 4 haha).
For a little thing, the NPRO kicks ..... And I can smoke it in the car without looking weird.