I have been using OnlyOne for about a week and love it (I tried some others and always went back), The UI is smooth, no issues and I like s-voice, but and this is a big but, I was no longer able to connect my BT laser keyboard, mhl (HDMI Mirror) no longer worked, there is a rotation issue, the next update is a few weeks away and wallpapers do not display correctly
If those issues were fixed, I would still be running. But sadly, I need mhl & my keyboard for work, so I flashed back to stock
Flashed the stock rom
Flashed the counter reset
(twice for good measure)
Flashed the stock recovery
Now back to 100% unmodified, 0 counter, official binary stock.