I use Pet Circle and definitely rate it 5 stars. It is cheaper than other similar providers and they sell much cheaper prescription pet foods (that the Petbarns etc don't sell) and they deliver quickly. Whenever I have had an issue or query they sort it out promptly and always to my satisfaction. But here is why I will stick with them - one of my dogs required prescription dog food ($98 for a small bag). I purchased one and then unfortunately my beautiful pooch had to be put to sleep 5 days later. I didn't even open the bag of pet food. More than a month later I contacted Pet Circle about possibly returning or donating the dog food because I couldn't use it. In less than 24 hours they gave me a refund and didn't ask for the food to be returned but instead gave me a list of dog rescues to donate it to.