You dont have the exposed plate screws like the north american switchplates, Australian ones have a shroud that clips on/off and covers up the mounting screws for a neater finish. (Mounting screws are all flat/posidrive combo heads, so you can use a drill to take them on and off.)
I’ve never experienced the recessed circles collecting more dust than blowing a single deep breath would solve. And I’ve never even seen any grime in them. I suppose of you used it outside, but every type would get grimy that way.
I think I would like Australia’s over the rest.
The recessed circles I feel like they would gather dust and grime in there if you don’t use it often and be tough to clean out.
I like the angles prongs as well as the switch to turn it off and on.
You dont have the exposed plate screws like the north american switchplates, Australian ones have a shroud that clips on/off and covers up the mounting screws for a neater finish. (Mounting screws are all flat/posidrive combo heads, so you can use a drill to take them on and off.)

I’ve never experienced the recessed circles collecting more dust than blowing a single deep breath would solve. And I’ve never even seen any grime in them. I suppose of you used it outside, but every type would get grimy that way.
The angled prongs also make it easier to plug it in the dark because you can easily identify the rotation of the plug.