The only neg reviews I see for this are things like it feels cheap the buttons are plastic....this is designed to be light weight hence the plastic aluminum frame. That's the whole point of this design if you like a heaver mods (I have a Drag and a Smok G priv lovem) that's great, but if you want too add a super fast firing chip set mounted in a great looking light weight mod that fits your 25 mil tank to your collection this is the one for you. :)