It looks like only reasons I had doubts about using CodeRush over Resharper have disappeared today.
CodeRush 3.0 ships with two new major features. The first is the new code navigation engine that allows you to easily traverse through method overloads, navigate between base and child classes, jump to the previous or next reference to a member, and much more.
Another important enhancement in this release is the new code generation mechanism. You can now first write code using undeclared class and member names and then, with a few clicks or keystrokes, automatically declare the referenced structures. As you can imagine, this feature will be extremely useful for those practicing test-driven development.