Friend and I built
https://druthers.app, and we use it all the time to solve our own interpersonal disputes, as well as with family and friends. It hasn't got any quality-of-life chrome or meta-features such as logins, or bookmarks. We were reluctant, even, to add the sharing button, since
obviously a person is already well-equipped to share a browser tab! (I kid! Of course users cannot be presumed to know the power of the device in their hands.)
It's fun, and works great for our purposes. Nothing can compete with it, in my book. Unfortunately, we haven't found a customer worth pleasing and, since we are well-pleased ourselves, we haven't found a reason to approach full-baked.
Edit: for demonstration purposes, "Who is the greatest band of all time?" https://druthers.app/#/de7ef4ea-35e6-4d0f-9b10-2945129eba2e