Font equivalents for the two systems, in order of my preferences:
Sans-Serif FontsArial, Helvetica, sans-serif
"Trebuchet MS", Helvetica, sans-serif
Verdana, Geneva, sans-serif
"Century Gothic", Futura, Arial, Verdana, sans-serif;
"Lucida Sans Unicode", "Lucida Grande", sans-serif
Tahoma, Geneva, sans-serif
Impact, Charcoal, sans-serif
"Arial Black", Gadget, sans-serif
"MS Sans Serif", Geneva, sans-serif
Serif Fonts"Palatino Linotype", "Book Antiqua", Palatino, serif
Garamond, Georgia, serif
"MS Serif", "New York", serif
"Times New Roman", Times, serif
Monospace"Lucida Console", Monaco, monospace
"Courier New", Courier, monospace
Cursive"Comic Sans MS", cursive