Here’s the official repo … rather than waiting forever to build it from the AUR.
Tried out Ungoogled Chromium and was very unimpressed. I’m using Vivaldi with Whoogle.
I’ve tried Chromium in the past, but have never used it exclusively. The interface is simple and it’s relatively quick to open & access the web. Unfortunately, you have to have a Google account to add any extensions … which makes sense for the purpose of Ungoogled Chromium.