Hi,

I was wondering if anyone here knows an alternative to Isonorm (http://www.fontspring.com/search?q=isonorm), which is suited to my application but slightly too condensed and only available in one weight. I'm using it as a web font and the browser automatically boldens it when required, but it doesn't kern well when this happens. I'm using the font at 12px, 14px and 32px mostly.

Some alternatives I've seen are:
Patron: http://www.fontspring.com/search?q=patron
Unicod: http://www.fontspring.com/search?q=unicod

I would appreciate your advice on the legibility and scalability of these fonts (and any similar you know of) and which one you consider the best.