Between the 2 I'd go for the Bvlgari. I just think it's a little easier to wear and a little more, clean?
Tbh, they are both pretty minimalistic pieces.
The Hermes just has a bit more irregularity in the style while the Bvlgari has the appeal of symmetry.
I'd say due to the shape and symmetry the Bvlgari is also a little better to layer with other necklaces (if that's what you like to do or would like the option to do so). Not saying you can't layer with the Hermes, it's still a relatively clean and simple piece and would probably be fine; just a matter of preference.
I know you're busy but to go try them both on in person if you can. The Hermes definitely looks better when worn (looks a little flat and sad in the photo). And trying on a piece can be a decision-making moment.