My vote goes for one that stretches exactly from one button to the other via your shoulders. After that, who cares? It's just how you stop the thing falling on the floor.
And if it is to be a vote, make sure you include ALL options, not just a few that may be what you like.
That's what YOU feel, buddy. Stuff comes in different colors, shapes and models 'cause people like them differently...
About the options, those are the ones I'd pick. And I'm the one looking for a strap, ain't I now?
Asking other members' opinions is just a fun way to share our thoughts with our friends. Including you.
That.