While uBiome is now out of business, it is good to give them a rating based on the criteria. See this post for the criteria being used.

Accessibility: A	FASTQ, Json, CSV
Significance: D	Just averages
Reference:  C-	Diet styles could be selected
Actions: D	General information
Evidence: B	References provided
Benevolence: B	No external research groups
Support: A	Prompt response reported, no issues with shipments
Promptness: B	Usually 7-10 days for a while
Metadata: A	140 metabolites reported
Overtime: B	Time charts provided
Taxa Score: 100% – A	This is the reference
Taxa Scope 100%	This is the reference