When comparing Opera (presto) vs w3m, the Slant community recommends w3m for most people. In the question“What are the best browsers not based on Chromium?” w3m is ranked 6th while Opera (presto) is ranked 13th. The most important reason people chose w3m is:
Although w3m is primarily a text-based web browser which runs inside the terminal, it supports and renders several elements which other terminal-based browsers cannot like images, tables, tabs or frames.
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Pros
Pro Still pretty compatible (not 100% though)
Pro Very fast for such an old unsupported browser
Pro Support for several elements not found in terminal browsers
Although w3m is primarily a text-based web browser which runs inside the terminal, it supports and renders several elements which other terminal-based browsers cannot like images, tables, tabs or frames.
Pro Available as emacs plugin
W3m can also be downloaded as an emacs plugins to be used as a fast web browser that runs inside emacs.
Cons
Con Unsupported anymore
Con Steep learning curve
Being a terminal web browser w3m has a certain learning curve because you need to learn the keystrokes and different commands.