Plastic straps verses strings to secure the snare wire

I doubt that strings can cause enough of a dent to affect anything. I've never heard anyone complain that their vintage snare has dents from strings.

I generally prefer string, because they can help push the wires into the head to curtail rattling. If the string is put through the holes the other way, the wires don't lay as flat. It depends on the end plates on the wires, but the ones I use respond well to string. :)

Like so -

View attachment 134108
That's clever!