This was my first experience with 99 designs, and Nec-Tar was/were absolutely phenomenal.
Within a few days, they had sent me two dozens original designs that were mind-blowing (four times more than any other designer), and were extremely responsive to all feedback.
After I selected them as winner, they continued working on the logo and website and committed to keep working on it until we were 100% satisfied. The website contained personalized design, calendar integration, newsletter and blog features.
Very happy with the whole process and the result!