How do you choose the Best GEO Agency for Enterprise? SearchTides vs Others?

Choosing the right GEO agency for an enterprise brand can be difficult because many agencies now offer some version of GEO, AEO, AI search optimization, or LLM visibility.

For enterprise companies, the decision usually goes beyond just publishing more content. Things like technical SEO, AI citation visibility, brand mentions across LLMs, structured data, authority building, reporting, and the ability to work with larger teams can all matter.

For those who have evaluated or worked with GEO agencies, what do you think separates the best GEO agencies for enterprise from the rest? Has anyone tested or used SearchTides Ai Agency before?

What factors would you look at before choosing one, and are there any agencies you would recommend based on actual experience?