Well many people tend to compare the price per performance, not everyone has a thousand dollar in spare to just buy a phone but everyone does demand a nice phone from the manufacturers, the one plus 5t took the media attention by storm, claiming to he faster than the iPhone x and leaving behind the s8 so Samsung has its new flagship in the shelves, is it rational to upgrade from a one plus 5t to s9 as a performance seeker or s9 is just a phone with few advanced features !