Depends on how big your monitor is too I suppose.
The original Topaz font wouldn't look so bad on 1024x768 I would have
thought, since Xen fonts on a 14" monitor at 1024x768 would be quite
whispy.
The fonts in the MagicWB package from SASG are nice like XHelvetica 13
and don't look too arty/medieval/cartoony.
Remember to switch the Prefs/Fonts - 'Mode' toggle to TEXT and not
TEXT & FIELD so that you don't get a background for your fonts and
they appear transparently on the screen.
Use System/FixFonts occasionaly to update your FONTS/ drawer to let it
know added/deleted typefaces.
And don't try using intellifont or anything, I think Workbench
supports it with the 'bullet outlines' but this would be really slow.
:-)