The good :- battery life surprisingly good. I can enjoy a stock Android experience by resetting it to the Google Now Launcher. It is powerful and fast, light and thin, and I've not really had any problem with it. The Dash rapid-charging is great being able to fully charge the phone in 40 minutes.
The bad :- Its impossible to hold if its not in its case, its like a slippery eel. It shoots off seats, and even slips out of your hand if you're not careful. I invested in Oneplus's genuine case and also the glass screen protector - both were disastrous and I don't recommend either. The case didn't fully protect the screen, and the glass protector was impossible to put on. I got a cheap spigen case and it lives in that all the time. It is not waterproof.
Overall : 5 out of 5, recommended!