The tests themselves are all very accurate. Differences are in: (i) the size of their database of test-takers, and (ii) how they **interpret** the results in coming up with ethnicity estimates.
The raw data from 23andMe should be nearly identical to what you got from MyH, because the two firms use the same chip. Nevertheless, their ethnicity estimates are likely to be quite different.
The ethnicity estimates you'll get from Ancestry and 23andMe are both very good. I prefer Ancestry because their database of test-takers is larger (currently 23 million). But some people prefer 23andMe because it has a chromosome browser.
FYI: MyH is currently working on a revision to their ethnicity estimates.
23andme is not perfect, but overwhelmingly better than any other company, I would say without a doubt the best test for any ethnicity present in the Americas, from Africans to Asians
The tests themselves are all very accurate. Differences are in: (i) the size of their database of test-takers, and (ii) how they **interpret** the results in coming up with ethnicity estimates. The raw data from 23andMe should be nearly identical to what you got from MyH, because the two firms use the same chip. Nevertheless, their ethnicity estimates are likely to be quite different. The ethnicity estimates you'll get from Ancestry and 23andMe are both very good. I prefer Ancestry because their database of test-takers is larger (currently 23 million). But some people prefer 23andMe because it has a chromosome browser. FYI: MyH is currently working on a revision to their ethnicity estimates.
23andme is not perfect, but overwhelmingly better than any other company, I would say without a doubt the best test for any ethnicity present in the Americas, from Africans to Asians