Adventure Ted, was it you the other day saying you wanted to tour Europe for some months? If so, you will need to look carefully at single trip durations. Some policies are as little as 30 days. Also, look at your house insurance well in advance for the same thing, so you can switch at renewal if necessary. We joined the C&C Club to get their house insurance, as it allows us to be away for 6 months/180 days.
Look at your intended use(s), so you can compare like with like. Very cheap insurance may not cover what you need it to.