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Which are better in this regard?

Kagi imo, will be paid though.

And waitlist atm (which I'm on). Having to pay for a search engine would be a feature not a bug, IMO.

It is based on Google and Bing, so you will get the same spam results

Their selling point is that you won't. You will get a lot less results with it too. Liking it so far, can't say I've run into spam with it