Hi Stephen2006
It's hard making your mind up on things like this, only to find a problem with it later, so I think you are wise to ask for comments.
We unfortunately, didn't get a choice from our builder, not sure why!
We just got what we were given!
However, I do think light tiles, but with a slightly darker pattern in them, can look the cleanest.
Plain ones will show every mark.......
Darker floor tiles tend to show the dust more.
As for the kitchen units, ours are cream & maroon plastic coated which are very easy so keep clean and give a lovely shine.
I have wood here in the UK and have to polish them too much!
White? Mmmmm, sometimes that can look cheap.........
My opinions, but I hope it helps.
Kind regards,