10 Fonts tested "on the road". Sometimes the preview isn't enought to have the right perception of the font, so here are some fonts that behaves very well for the everyday use.

I use 100 as resolution per inch.
Happy Ubuntu!

Bitstream Vera Sans Roman 9

Calibri 9

Dejavu Condensed 9

Delicious Regular 10

Freesans 8,6

Liberation Sans 8,6

Lucida Grande 8,6

MGOpen Moderna 8

QKlassic Bold 10

Trebuchet MS 9