Best DFIR Company in the world?

Wondering which IR company is the most skilled and well known? I'm going to assume it's either Mandiant or Crowdstrike?

This is NOT regarding MDR. This is specifically for DFIR responding to actual breaches by an APT of major companies and government agencies.

Looks like Mandiant worked on SolarWinds and Colonial Pipeline hacks/breaches. Any other companies besides them that are at the same level?

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