HIC have done me good this year.
If Tesco's are the same as they were when I was quoted the premium is good but the cover is not. They only offered a policy that would replace equipment with standard in the event of a claim. Admiral are the same as that was why I left them as are Diamond and Elephant (same group).
Don't just look at the lowest premium look at the cover the premium gives you. It might save you a fortune in the long run