The drive of the Oshan X7 will probably be the most responsive of all these options. The materials aren't high quality of any of the listed cars so if you feel that the X7 ones are a bit below that then they just don't hold up well over time.
Technically you have a lot more sensors and things to go wrong with the H6, I'm not saying that they will fail but when you have more added things (turbos, adas, sensors) the likelihood of things to fail is higher. It wouldn't strand you for most things just some lights would show up that the systems aren't working if they fail.
What I'm trying to say is that the H6 is a more spacious feature filled car that will make the Tuscon feel dated but if you are after a more plush ride and couldn't care about these features (which mostly have a use on the Motorways here) then the Tuscon can be considered.