...I was insured with AAMI for about 2 years and found them to be a difficult company to deal with that offered an inferior product. A friend of mine has had 2 bike theft claims through them and been filed over twice. They are a company o would avoid. But when I was with them one of their agents gave me some premium reducing advice in regards to listing portable items with them. He pointed out that I probably only take one bike with me at a time, so didn't need to have all of them covered all of the time. Just ring up and list the specific bike I plan to use before taking it out...then take it off the policy when I am done. So on a Friday I would pick a bike for the weekend then on Monday I would reverse that decision. My daily rider was always listed.
I haven't used Allianz insurance myself, but a friend used their travel insurance for a trip with me to Japan about 10 years ago. On that trip he broke his back and ended up in hospital for a lengthy stay. Allianz looked after him really well with medical expenses, paying for his father to join him and help him out, repatriation with medical support, and covering a bunch of things he had purchased and wasn't going to use (such as accommodation and left passes). He was pretty pleased with their service. I inherited his large stash of unused fireworks and also ate the sacred and unbelievably good salt caramel lollies.