Dillo is faster whilst NetSurf has better CSS support. For text- and table-heavy sites Dillo can be nicer to use (since everything has a uniform look and feel);

Dillo is faster whilst NetSurf has better CSS support. For text- and table-heavy sites Dillo can be nicer to use (since everything has a uniform look and feel); for sites which rely on CSS for usability then NetSurf is nicer to use (e.g. headers and sidebars packed with nested mouse-over menus, which Dillo and text-mode browsers tend to render as a gigantic column of cruft above the actual content).