Is There a Generic Recommendation for Genetic Assays?

There's a fairly significant number of companies out there to provide these tests and services. So i'm wondering, base tthe the relatively large number of companies that do this, if there's any that youve found to be particularly beneficial or helpful. Do you just recommend fineg one ad, stick with it and use that for your sereal and sand subsequent follow ups? I wouldn't give a specific recommendation onnon a single company, and want to be in a position of towding ta.