Scalable vector outline and stroked fonts usually offer the best results in modern design. During the mid 90s fonts cost about $40 for a single face, but needed to be purchased in packages. Today there are many sources where usable fonts can be downloaded for free. Here is a list of some links for these...
Showfont.net is a site written in frames offering free TrueType fonts and previews, organized alphabetically and downloaded free after verifying the captcha image. Handy for some unusual themes and logos.
http://www.betterfonts.com/ offers many of the same fonts, presented differently with no captcha check. http://www.creamundo.com/en/ is similar but also offers web pages in Spanish.
http://www.searchfreefonts.com/ has a large collection including many varieties of standard typefaces like Swiss 721 and Arial.
Specific to CAD, there are several sites for downloading AutoCAD SHX fonts:
- CRCweb/RAND still hosts several free SHX fonts and hatch patterns HERE.
- There are a few AutoCAD fonts on cadforum.cz HERE
- FreeCADapps still hosts the 19-font pack acadfont.zip HERE
- CBEN.net has a small selection of free CAD fonts.