Manifold is sexy. Feels modern and techie. Proxima Nova was fun but is everywhere now.
I am currently using a lot of the gotham family
It has an unique 'g' shape
Kinda old, but still one of the best: Akzidenz Grotesk. So much better than Helvetica!
Akkurat, Akzidenz Grotesk, Helvetica Neue (by this order).
While lately I've been getting into Muller or LL Brown lately, my favorite sans serif is still Apres from Font Bureau. Back when Palm commissioned David Berlow to create a system font for its new webOS smartphone operating system in 2009, Berlow came up with the wonderful Prelude, which is a stunning, highly readable sans serif font that looks great on a smartphone screen in all sizes, particularly smaller ones like 6 or 8 point. Apres is similar in many ways, and looks particularly great for hard copy output, such as user manuals. Indeed, Palm's marketing team commissioned Apres for the company's packaging and marketing efforts.
I love Apres, particularly how the stem of its lowercase "y" pulls to the left. I have deployed Apres wherever I can on my MacBook Pro. Such personal uses include: email clients, notes, business cards, signage. If I had my way, I would replace San Francisco with Prelude (or Apres) as my system font on my iPhone, or Roboto as the system font on my Android smartphone.
I'm partial to the geometric shapes of Gotham and Brandon Grotesque but also like to use open sans or fira sans
I continue to use Bebas fonts in a lot of designs. Gotham is cool, I use interstate also.
Really just depends on the project.
I use "Graphik" for a lot of the editorial work I do. Lots of weights, good contrast, soft and very legible!
Circular, DIN, Graphik, Univers and Tabac Sans have been my go to for branding and editorial.