I have all three of my Italian Greyhounds on the plan. They are all seniors, one has idiopathic seizures and another chronic bronchitis. They provide great service and are very good with my 2 that are afraid of the vet and one who is outright aggressive.
I had spent so much money going to other vets with no resolution. With chronic and progressive health issues you cannot do much other than partner with a good vet who can come up with a good plan to make your pets comfortable in their last years of their lives!