Since you want a «DINish feel», what about FF DIN?

I do not like DIN as a body typeface. This font is like a perfect marriage between technicality of DIN and humanistic feel. Another advantage of this typeface is it's narrow. Not condensed but narrow enough to work great in long documents. But as I see I am too picky:)

Ahs, why not Fago? Because fago is insanely expensive.

FF Unit perhaps.

Not so Din-ish but my ClearviewText works great as a text face. John Berry writing in Creative Pro commented that ClearviewOne, its Type1 predecessor "reads astonishingly well as a text face".

How do you like http://klim.co.nz/national_samples.php?
or what about Georg Saldens Polo: http://www.typemanufactur.com/eng/fonts/polo/test.html?ts-font=Polo&ts-s...
or Strada from Alberto Pinggera: http://new.myfonts.com/fonts/fontfont/strada/

or maybe:
http://vllg.com/Incubator/Tram#panel=poster
http://vllg.com/Incubator/Agile#panel=poster
http://vllg.com/Klim/Karbon#panel=poster
http://vllg.com/Thirstype/Apex_New#panel=poster
http://vllg.com/Lux/Section#panel=poster

There are a bunch of FFs that could be right up your alley. John mentioned FF Unit above, maybe also look at FF Sanuk or FF Clan.
You might also like Breuer Text.
I'd also second National – I wouldn't necessarily call it «technical», but it does work for text and is a very nice font.

This seems very comparible to the thyssen-font. http://new.myfonts.com/search/camingo/fonts/

Just released: Sense

http://justanotherfoundry.com/facit

Stroudley seems to be a strange crossover of Frutiger Condensed and Vectora. If you like it I suggest having a look at these two.

May I recommend Frank, by Miles Newlyn:
http://www.newlyn.com/fonts/fonts/frank

Personally, I don't like any sans for extended text. But if I had to, I'd certainly include Vestra as one to consider.