Ask type professionals: what are good typefaces for spreadsheets (tabular numeric data), onscreen and in print?
Onscreen I've been switching Excel's default to Consolas, which is more compact yet more readable. Other programs have unchangeable defaults (but they rely more on fix-width, too).
If you choose a Opentype typeface with Tabular figures as an option, you could have a high quality typeface that prints out the numbers that are fixed width, but might be significantly more aesthetically considered than standard monospaced font.
Not from the perspective of a type professional, but Tahoma is still very readable down to 8 point, for when you want to see a lot of cells at the same time. I don't find that monospacing is any help in spreadsheets.
Onscreen I've been switching Excel's default to Consolas, which is more compact yet more readable. Other programs have unchangeable defaults (but they rely more on fix-width, too).