At Ward Hayes Partnership I had lots of scope for experimentation and found Freehand an excellent tool for developing vector logotypes.
Left: Click the image to see page after page of logo visuals and roughs for Cafe developments in and around Oxford, United Kingdom.
Interestingly, in about 1997 I started using @ and :) symbols within logo designs. I remember everyone saying 'Whoops, you've got a typo' and then I had to explain what I was doing and why it might be important. Now, you see it everywhere.