Currently, I'm working on 2 logos for different companies. One of them is my design studio, Zee (http://zee.com.br). My design process for logos is simple: firstly I brainstorm some ideas and keywords that have relation with the business of the logo I'm working on, then I look for images or ways to make those ideas and keywords real. Of course there are more steps, one of them is checking other logos, not only for reference or ideas, but also, and perhaps the most important, to see if I'm not doing anything that has already been done.

There are excellent sites that showcase logos, my favorite is Logopond. They have a huge number of logos in their gallery, very useful to see how other designers approach some subjects on designing logos.

Because of that I selected some of the best logos I found on Logopond that use colorful gradients and subtle 3D effects.