We contacted 2bits.com as we were looking for someone to implement the migration of our ecommerce site to Drupal. They responded to my request promptly, and provided an estimate which was quite reasonable.
Once the project was complete, they continued to provide excellent support, was helpful in guiding us, and in helping us understand Drupal.
The are not only highly technically competent, but they are professional, communicate effectively, and went the extra mile to ensure that we were completely satisfied with the work performed.
I highly recommend 2bits.com.