Could you tell us more about what kind of customers they have, and what kind they would like?

Ralf Hoffmeister's superficial

Try to avoid free fonts - you usually end up paying in other ways...

Case in point: among other problems, Superficial is very poorly spaced, which means you either have to spend a lot of time fixing it, or it will look like your client's customers are very clumsy people. :-)

Also, I'm getting a nagging feeling that it's a swipe-n-hack job, meaning it was based on somebody else's -possibly commercial- font. Looking at Hoffmeister's only other font* my suspicions are doubled. Please don't support theft.

* http://26plus-zeichen.de/fonts/winheim/

hhp

Thank you for your suggestions.. The site is a magazine, regarding nutrition, health and physical activity, but is not in english.. I am still working on it, but will try today to put some dummy content and link it. I tried some fonts, but not really satisfied.. Thanks hrent, I understant that.. I tried the superficial font, just to see how it looks like.. The headers on the site are Open Sans Condensed in uppercase, the same green color as the fonts..
Any comment is apprecciated :)
Thanks :)