I was very pleased with Trupanion's service after my boxer tore a ligament in her knee. They were very responsive, friendly, helpful and supportive. Trupanion was also very quick to get our claim paid.
Unfortunately, friends had warned me that their past experiences with other pet insurance companies had not been as pleasant. In fact far from and in a lot of cases they found out the hard way that the policies they had purchased didn't coverage much at all. We definitely made the right choice in Trupanion.
My only small complaint is that the vet consultation fees and taxes are not included in the coverage.