HELP- I Need To Know??

In this picture my grandson son Izaiah asks my son Lee-Joel, his Papa, a question....

I have a question that I need to ask you, my Blogger friends....

Many of you will realise I spell differently to most of you...
Some of the differences are:
I may use an S instead of a Z.
I write centre instead of center.
Tyre instead of tire.
Kerb instead of curb..

Now the question?????
If you were reading a book by me....would you prefer it written in British/Australian English.
Or
American English?
 If you were to read a book about Australia, would you want that book to be in Australian English or American English???
Or wouldn't it matter at all??

You opinion is valuable, so please tell me.