What About Avant Garde?
http://www.graphic-design.com/Type/Avant/default.html

White, Alex W.
Design, Typography and Graphics
2001

Abstract:

For use in extensive text the font's rigid, uniform strokes will create eye problems right away. Additionally, the perfect circles in the round characters begin to form light spots or 'holes' in the text that disturb the calm texture of columns of type. The character count is so extended that in order to fit copy you have to run it at 8 or 9 point, which is not acceptable for comfortable reading. Bumping it up to 10 or 12 generates ugly text at best.