[quote=@Kuro]
This kind of thing is on my to do list sometime in the future mainly to a) verify my ancestry (given I know nothing of my paternal side of my family) and b) help my grandfather track down our family history and where we came from. Which one did you use, if you care to share? Personally I've been eying the 23andme test. 
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I decided to do it as a foster child and because I genuinely believe there's a chance that my sister and I may not be fully related. I used Ancestry for it, but I don't really think it matters all too much? You can go for either one, I'd say. I haven't gotten my results back and it'll be a couple of week, but I can keep anyone interested in the matter updated.