Legato.
http://typophile.com/node/55783
http://typographica.org/2005/on-typography/our-favorite-typefaces-of-2004/

hhp

By "stressed" do you mean one with contrast?
Condor is versatile and pretty fresh in terms of release date, though connects to historical styles.

http://www.typophile.com/node/82518

Relato sans
Nota (by typonine)
Ideal sans (by Hoefler & Frere-Jones)
Actium
Karmina Sans
Haptic Pro
Orenga
Quadraat Sans !!!
Leksa Sans
ITC Legacy Sans
Stone Sans

Some of these are just very 'humanistic', others, like Quadraat Sans, have a clearer stress. All can be found on the Myfonts.com website, except for Nota and Ideal Sans.

Thin stressed sans-serifs (high-contrast; incl. Noir, BP Sang Bleu Sans)

Reading sans-serifs (contemporary ‘humanist sans-serifs’, or ‘serifless romans’; incl. Legato, Quadraat Sans)

For something in the vein of Ocean I second Condor. Or Roxy.

The newest one is probably Ideal Sans by Hoefler & Frere-Jones

I don’t see any real stroke contrast besides minor visual adjustments in Ideal Sans. Maybe we should define “stressed sans” first.

> Maybe we should define “stressed sans” first.

Yes.
A sans where a layman can see any contrast at all (when asked).

hhp

And I that thought we was talking about a psychological condition! ;-)