/

I always enjoyed the Android font, which is Roboto.

https://www.google.com/fonts/specimen/Roboto

Handel Gothic BT

that sexy, thicc sans-serif anything with numbers looking vastly different from each other

Do you need to ask?

Samo sans pro

Ubuntu font is pretty cool, totally free as well

Helvetica

http://www.dafont.com/flame.font

surface

Futura

http://i.imgur.com/YjR7H3Z.png

mixolydian is nice, using it on my hud thats releasing soon hopefully

I would kill for a times new roman hud.

with the main menu looking like a newspaper

I'm pretty biased w/ futura being my favorite font, but here's a few deviants of the font family.
- Futura
- Futura T Light Regular
- Geosans Light

For a little character to splash around here and there; not necessarily as a main font imo...
- Capture It
- Intro Rust
- Seaside Resort
- Tschich

A random font.
- Geometria

geometria and geosans light are so good i would love a geometria hud

HUDs should, first and foremost, be informative. This requires that the text be legible. Because of this, an ideal font will have some key characteristics:

1. Sans-serif: on digital displays and in short strings, sans-serif fonts have an advantage, especially with smaller resolutions.
   
2. Distinct numerals: since most HUD strings are numerical, it is important to have numbers that are easy to recognize in your peripheral vision or at-a-glance. Geometric typefaces at small font sizes often have issues with this. You may want to consider typefaces specifically made for traffic, which excel in this department.
   
3. Stroke width: TF2 seems to have rendering issues with light/"thin" typefaces, especially at smaller resolutions. As a rule of thumb, avoid Thin, Light, Ultralight, and Hairline weights.
   
4. Case: all-caps or small caps hurt readability, and should be avoided in important strings.
   
5. Character set: free typefaces often lack certain glyphs, such as the colon or addition/subtraction symbols. Avoid these (or add your own glyphs) if your HUD makes use of these characters.
   
6. Scale: some typefaces are only made for certain display sizes and scale poorly; others look very different depending on their display size and/or resolution. Use typefaces that work for your situation.

This is not a complete list, but it should help you avoid the pitfalls that I see in so many custom HUDs with poor font usage. I would recommend that you use two distinct typefaces; this gives you more flexibility, and harmonizes an otherwise incoherent design.

Eurostile is good

comic sans is good

some fonts used by popular huds

http://i.imgur.com/lMufh1l.png

All of the Code fonts look nice (͡◕ ͜ʖ ͡◕

abeatbykai is nice