Firefox is generally regarded as being safer than IE. Not so much in the vulnerability count but by the fact that they are corrected sooner. A common addition to using this alternative browser is NoScript. It blocks all sites from using Javascript (and others) by default and only allows sites which are on a whitelist compiled by you.
None of this is news, it's been around for ages. But how good is this combination? Would you venture yourself in dark web territory with these two? For investigating sites which are probably malware infested do they offer enough protecting power?
I don't have the expertise to setup something like VMware but I wanted to have something which was at least sufficient to take a peek.