I've had mine for a couple of months and like it. Came with the Melo 300 which I put an Rba in. (The coils it came with were just too much for me).
The only con I have with the mod is that it's just a little big and heavy to carry comfortably in my pocket - especially with a tank on it. This is why I just ordered an istick 40w. One for the pocket, one for home.
The battery isn't bad, but if you vape a lot and at over 30 or 40 watts you probably won't get a full day out of it.
Best of vaping to you whatever you decide.