How is Iridium?
About all I can say is it works well since I currently have no real preference in a browser and have something like 8 of them on the machine and bounce between them all depending on the sites I'm visiting.
I did install it as the default on the wife's machine because Palemoon was becoming incompatible with the sites she used and with Iridium's predisposition towards privacy it meant I didn't need to trawl through its settings beforehand.
I haven't heard any screaming about anything not working so it passed that test.
It's available as a portable so it's easy enough to try it out.