There is such a big variation, it's really hard to choose. You have to decide what is most important to you and how much you want to spend. If you are in the UK, I find E & L are less well known and give a higher level of cover for the money than other, better known companies like petplan. I went for a mid-level cover which I pay £16 per month for and it covers me up to £5000 per annum. They were ranging from about £8 to £30, but a lot will only cover you for 12 months for a condition. Good luck!