markyboy156 For the 7k, I can not say, but I think the s10/10+ should go.
as I said, the sm-r325 is compatible with the s10+ at most (after, there are normally all the necessary tips in the box.
As far as smartphones go, there are none that are better than the samsung screens.
At the headset level, either the gearvr or the daydream (with a samsung, the gearvr is the best solution), but in both cases, they are abandoned.
Deovr is a good app, but it has some shortcomings (and it is no longer followed for the gearvr).
Otherwise, you have Pigasus which is not bad.
Translated with www.DeepL.com/Translator (free version)