I use it for all my insurance shopping (cars & home). I've managed to beat my renewal premium every time (sometimes even with my existing insurer). I don't have much time to shop around, usually leaving renewal until the 11th hour!
Another thing I like about it is how I can see what I paid for my insurance last year, and the year before that, and the year before that... etc... (for all the years I've used it for). It's always interesting to see yet another claim-free year not make a blind bit of difference!!!
The insurance companies that take pride in "not being on comparison websites" are missing out on a great deal of valuable traffic. I used to call Direct Line for a quote each time, but they were never competitive enough so now I don't bother. Methinks the money they don't pay in commission to comparison websites is spent on advertising, because their quotes certainly are not any cheaper.
You can probably barter over the telephone for a better deal, but if you can't be bothered, are too busy or if you're like me and not facing that massive a renewal premium anyway, then comparison websites are the easiest way to shop for insurance, and confused.com is the comparison website I use.
People who think the site is complicated ought to spend the night filling identical forms with the 100+ different insurance companies to see how easy that is.
To reply as a company, please log in to your business account.