It was definitely between option B and D for me.
While option A looks like pretty much any other soundbar out there, option C has the looks that might worry me in the fact that it has the potential to wobble. Even though my soundbar will be less likely to be touched, i'd like to know that it is set and firmly set once put.
Option B and D were interesting options. I liked option B in that it provided a unique look to the traditional soundbar aesthetics. The flat top gives users the ability to clearly see what it appears to be multiple icons when close while also facing upwards (compared to option D) that will allow the icons to be less distracting if placed in front of the TV. The rounded corners gives it a nice modern appeal.
Option D is nice in that it is a fresh take on a soundbar as well (from my experience). I like that there is potential to have the speakers be facing towards the viewers.
I chose option B because with the current set up I have, option B would look nicer in front of my TV. Clean and less protrusion