There are lots of branding companies you can go to when you need a visual identity. They have portfolios detailing the logo work they’ve done, explaining the ideas that are conveyed by each logo element, what the choice of colors conveys, the importance of a logo, how it can help propel your unique brand message and achieve separation from your competitors, etc.
We would argue that you can tell a lot about what a branding firm really believes in based on the work they’ve done in presenting their own brand.
Landor, Interbrand, Pentagram and Siegal & Gale all wax poetic about the power of the logos they created for others, yet they’ve all chosen to go gentle into that good night, sans logo.
Instead they each opted for a type treatment.
Note how each visual identity demonstrates their respective understanding of the power of visual identiy to communicate the unique qualities of their individual brands.

We think they’ve each succeeded in communicating that understanding brilliantly.