Depends on your application. For the most part Asus ROG Strix B550-F, it has everything you need and then some. Notable features are Flashback making it easy to upgrade firmware and do NOT require you to have a gen 2 CPU to upgrade, as other do. The best part is it the B550-F has a lot of features that make upgrading in the future possible. This puts you at the $200 mark. If you want something a bit cheaper go with their TUF series at $150. You lose some ports and features, but you keep the quality. Somethings to look for is RBG ( if you're into that), WiFi 6, NVMe 4.0 support, headers if your case has front ports, and how well the motherboard handles heat. These are just some of the big ones.
If you plan on transitioning into a small form factor, I'd go with B550-I as it has all the features the B550-F has in a smaller size.
BTW, the B550-F is currently at a very good price.
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