I pay $75.00 dollars a year to insure 20k worth of equipment. No deductible and dont matter where it happens or if its lost or stolen. I dont use the stuff for business so that might make a difference. I go thru my home owners insurance. I did have to scan every receipt though and give them a copy.
I have found if the lights good that the 1.4 version III work great. But I have to admit the better the lens like the 500mm and 600mm lens are the real winners of the tc. The best lens I have dealt with that works amazing with is of course a really expensive lens and thats the 400mm DO II that...
Wow some samples of the canon 1dxm2 shots taken at 10,000 and 32,000 iso and there clean. 10,000 impresses some but 32,000 really impresses me. Here is a link with samples
Andy Rouse - Wildlife Photographer