Always preferred over. My dear MIL, whose house rivals Better Home & Garden, however, has ALWAYS done under (and goodness knows, I'd NEVER think to change it).
However, as time goes, it's good to remember those words of wisdom ... 'Don't Sweat the Small Stuff'
As to replacing toilet rolls, solved that too. I have TWO toilet roll holders. So when one goes empty, there is a spare. I'm the one that ends up refilling the empty one, but at least I don't sit down to discover it's on 'empty.'
However, as time goes, it's good to remember those words of wisdom ... 'Don't Sweat the Small Stuff'
As to replacing toilet rolls, solved that too. I have TWO toilet roll holders. So when one goes empty, there is a spare. I'm the one that ends up refilling the empty one, but at least I don't sit down to discover it's on 'empty.'