I use Kagi! I average about 1,000 searches/month, so well in excess of the lower tier, but I started with 300 and there’s nothing inherently wrong with it as long as you only use it that often. I’ve grown accustomed to using search instead of bookmarks, and doing simple things like math in the browser instead of a dedicated app, which could help prune some of that usage.

You can use the 100 free searches to gauge how long it will last you.

I personally don’t have any gripes with it, between the ability to rank sites and their new initiative allowing folks to report slop sites, it seems to consistently keep me satisfied.

They do have a feedback site (https://kagifeedback.org/) where you can request new features and file bug reports. The advantage of a paid service is they are very attentive to user requests (within reason). Between their blog and changelog you can gauge how things are developing.

My budget has the flexibility that I’m happy to pay for a service that I use every day, which is aligned with my priorities. For those who don’t have that flexibility, Brave functionally (but perhaps not ethically) is a strong second best option. They’ve been copying Kagi’s homework for a while now and can do some of the same page ranking, etc.