Progressive here as well. They have a tiered system so the longer you are with them the more discounts you get.
Also, consider that asking for anyone's experience with claims with them (or any insurance company) is anecdotal. It's just their story. Among thousands. And complainers just complain. You never hear/read anyone post about how they didn't use their insurance recently. You have to look at reviews over time to get a sense of a company's reputation.
And it is difficult to compare costs as there are so many variables. Brand/style/size of bike, riding experience, location, insurance features and levels of liability, UM, property, etc. I think the companies intentionally obfuscate their policies so it is difficult to compare.
Progressive has a good reputation and my sense is they are very competitive with their rates. I would have to research more about how their claims experience is (no personal experience, knock on wood).
I wouldn't mind sharing my policy statement with you if you are interested and you think it would be useful.
Jerry
"I ride because it frees my mind from the tyranny of petty things."