No regrets, but mine was given to me as a gift. It has exceeded my expectations and I was a skeptic that had not intent on buying it.
I wear it everyday and getting notifications on the wrist, controlling music from the wrist, seeing weather, setting reminders, seeing my calendar, using Siri for controlling lights around the house, getting delivery reminders, knowing when someone is in my yard or at my door immediately, adding stuff to the grocery list, using it to remotely start video or snapping photos on my iPhone's camera, seeing who is calling me when I am not near my phone (also nice for short calls), seeing texts... Oh, and telling time without getting out or always carrying around my phone.
I am looking forward to OS3.