PACE
I found myself in much the same position as you when looking for Cirrus insurance, they wanted ten hours dual on the Cirrus, the 12,000 hours, ATPL & instructors rating all seemed to count for nothing.
What we did was phone around the market and find an insurance company that would see a little common sense, these peope reduced the requirement to differences training with an instructor ( about an hour in the air and two on the ground).
This has all come about because of the chute, the insurers are living in fear that at the first sight of trouble you will deploy the chute and write off the aircraft.
This of course is not true as a chute deploy is not an automatic wright off, it depends on what you hit as you land.