Working my way through the tests. I started with the assumption that I was 100% European Ashkenazi Jewish. And I hoped to find relatives.
My 23andme test was some of the best money I ever spent. I'd do it again for the health information alone. Even for the genealogical information alone, it was worth it. 23andme gave me an mtDNA and some other hints and I know now that I'm part Sephardic Jewish too. A big (but welcome) surprise.
But their ethnicity classification was a big disappointment: 100% European/Near Eastern. Okay then.
Because 23andme gives you your raw data, I was able to use Gedmatch.com to do much better ethnic data tests. Came out as heavily Jewish, mostly Ashkenazi, but a lot of Sephardic too. Some Middle Eastern, a lot of Mediterranean, and plenty of Eastern European.
So far, neither 23andme or GedMatch have led to a single relative match. There are hundreds of matches but none have panned out. Apparently, because us Jews tend to marry each other, we sometimes have overly confident estimates of how closely related we are. That being said, I have enough genealogical research data to find just about any 2nd or 3rd cousin by matching trees, and nothing so far (I have a couple 2nd or 3rd cousins at 23andme but none have written me back).
So I was looking forward to the AncestryDNA results. I knew not to expect much from the ethnic grouping. Indeed, I got 94% "European Jewish" and 6% "Uncertain." Does anyone know? Would the uncertain be my Sephardic background? Or?
I thought the strength of the AncestryDNA test would be in the matches. Unfortunately, nothing closer than 4th cousin. I've checked dozens of trees and even written a few people and there is not a single surname match (that also matches location even very broadly), and no small town matches either (several do match for large cities like Warsaw or Budapest). Ironically, I match plenty of people with no "European Jewish" ancestry at all (but some "Eastern European").
I've paid for a transfer to FTDNA (raw data from 23andme) but they're having software issues and it's taking months. That is the largest Jewish database I hear, so maybe I'll get lucky there.
It's still fun. It's still worth it. There's still plenty more to explore.