Being a European member, I have all dive insurance via DAN Europe's Professional Insurance Range. This is for multiple reasons:
- with the so called "Silver Professional" option, all Technical Diving is insured to 150m (deeper dives can be insured on a dive-to-dive basis, after they have reviewed the dive plans for the individual dives)
- DAN Europe does not argue if something happens, they just pay, having the best interest of the patient in mind (I never had to use them, but all people I know that had to, were more than happy with DAN)
- part of the annual premium goes into Science and Research, sponsoring many very interesting projects
- DAN has never been reported to have tried to argue their way out of paying, or trying to proof that an incident happened due to some diver error; other insurance providers reportedly try to find reasons not to pay
I teach DAN's Oxygen Provider courses, am a DAN sponsor, and I am completely happy with them ;-)