Theoretically, us vets shouldn't recommend anyone as that's sales and not in our remit. Some practices i believe have links with certain insurers. What i recommend to my clients is to make sure you go for lifetime cover, so as not to end up paying for many years of treatment for eg. diabetes, epilepsy, arthritis. Petplan are very good because they are huge, so deal with a lot of claims and thus are efficient. But do look at a number of companies, compare the amounts of cover for the price as this is likely to be the main difference between different companies.
have fun with the little one anyway!