http://www.myfonts.com/fonts/emigre/vista-sans/

http://www.myfonts.com/fonts/typotheque/fedra-sans/

http://www.myfonts.com/fonts/agfa/scene/

http://www.myfonts.com/fonts/emtype/relato-sans/

http://www.myfonts.com/fonts/dstype/priva/

http://www.myfonts.com/fonts/dstype/ezzo/

In no particular order,
Tim

FF Max
FF Signa
Magistral
Prokyon

Etelka
http://www.stormtype.com/typefaces-fonts-shop/families-15-etelka

Vida
http://www.stormtype.com/typefaces-fonts-shop/families-75-vida

Klavika
http://processtypefoundry.com/typefaces/klavika/index.html

Neuesans
http://www.ourtype.be/

Thanks a lot for all suggestions.
This time I think I fell in love with Klavika for the purpose.

Correction: Just bought Apex New. It had the best amounts of different weights – and what a lovely typeface that is!

http://vllg.com/Thirstype/ApexNew/mudTyper+Weights/