Maax or Kabel
Maax or Kabel
Maybe FF Mark? http://www.ffmark.com
Neutra or Metro. If you want to go less-geometric, try Gill Sans
Near to Futura: How about Karbon by Kris Sowersby at the Klim Type Foundry. It won Best In Type Annual 2011
Further from Futura: How about Geogrotesque by Eduardo Manso from Emtype in Barcelona
I just started using brandon grotesque but you cant go wrong with gotham
GT Walsheim or Telefon
Someone has already mentioned it, but Avenir is a great one and has lots of weights to play around with.
I use Brandon Grotesque a lot, but recently I've been using Nationale recently.
Neuzeit, FF Mark, LL Circular
Brandon Grotesque + Brandon Text — http://hvdfonts.com/brandontext/
Governor (Lost type) — http://www.losttype.com/font/?name=governor
Neutraface (House Industries) — http://www.houseind.com/fonts/neutraface
Nobel (Font Burea) — http://www.myfonts.com/fonts/fontbureau/fb-nobel/
Novecento Wide (Free) — http://www.fontsquirrel.com/fonts/novecento-wide
Omnes Pro — http://www.dardenstudio.com/typefaces/omnes_pro
Arquitecta http://www.myfonts.com/fonts/latinotype/arquitecta/ is a bit wider than Futura but has pointy terminals just like it.
I would try Arquitecta (http://www.fontshop.com/fonts/family/arquitecta) or Brandon Grotesque (http://www.myfonts.com/search/Brandon%20Grotesque).
I would recommend Euclid Flex from Swisstypefaces.