Well I took the leap and have made Vivaldi my secondary browser. I first installed the
experimental x64 but replaced it with x86 because the former seems sluggish and somewhat buggy on certain pages. I really like this browser and it's awesome to just be in the beta stage. The HTML5 h.264 support and Full Extensions support are major points in my opinion. I always wanted a secondary browser under Firefox but all the others came up short or undesirable to me for one reason or another. Vivaldi fits the bill.

Now all that remains is to get under the hood and disable undesirable features to me such as Geolocation and others. Thanks for creating this topic and giving me interest in the browser wasgij6. It's a keeper.
Edit : does anyone know if there is a way into advanced settings like in Chrome or about:config settings controls within Firefox. I googled for it but found no direct answer. I Also tried Vivaldi:config and came up with this message. Maybe the settings will be available in a later build.
