> OpenBSD works well with relatively recent versions of Chromium and Firefox. That being said, they are on a six month release cycle. The Chromium port can fall behind if you stick to -stable or releases.

Just to clarify here, security patches are backported to -stable. So it is not like you stick to the same browser release for six months.

Personally, I run www/firefox-esr. In part because the ESR moves more slowly in general and in part because it is maintained by someone working for Mozilla.