clarity, latency, battery, and reliability
Because especially the battery part annoyed me I got a “SteelSeries Arctis Pro Wireless” (don’t get the Nova Pro, it needs propriety software and doesn’t work well with Linux from what I heard) and it’s awesome. The battery is not an issue since it has exchangeable, rechargeable batteries that last around 10h and there is no noticeable latency.
It supports Bluetooth and charging via USB-C as well so you could use it as a headset.
You could give SearXNG a try. It’s open source, you can host it yourself, and it has no ads or tracking. Most other search engines (including DuckDuckGo) make their income from ads, that alone makes them untrustworthy in my book. I’m using https://searxng.online/ and it works good enough.