"They have gained a very good reputation in the fixed wing market". Yes they have and they quote about 10 - 15% lower than the other brokers for similar protection, presumably because they can save costs by having their service on-line.
Their website is quite user friendly and you can make changes to all sorts of factors, like number of pilots and their experience levels, level of cover required, uses, the list just goes on. Each time you make a change, you can easily see how the final premium gets altered. It could almost seem like a bit of fun, experimenting with all the variables!
So far I've seen no complaints about them in the fixed-wing arena.