I just got the iPhone X/10 and personally I think it’s amazing! Face ID works perfectly.
Nobody else but me can get into my phone unless the have my passcode, also having more screen is very helpful in a way. The camera on the iPhone X/10 is the most amazing thing in the whole world, it’s so clear...portrait mode is an entirely different story. (in a good way)
I had the iPhone 5c in white, it was so bad...the camera was horrifying, it’s super small and the volume didn’t go very high it’s was just terrible.
So if your looking for a new phone, I recommend the IPHONE X/10!!!