Hi,
I did a ton of research online for Trip insurance. The are a number of websites that have cost and coverage comparisons. Other than the obvious cancelation coverage. You want to decide what other parts of the plan are important for your needs. Like delayed baggage, missed connection or medical coverage. I ended up going with IMG for medical/evacuation coverage. It was about $100 more than some other plans. This summer I had to be air lifted off Block Island, RI by Life Star. An extra $100 for peace of mind is worth it.