it was this one, jennykenny
https://www.familytreedna.com/family-finder-compare.aspx
They do have special offers from time to time. I have to say it wasn't perfect - they don't distinguish between, say- Anglo-Saxon and Celtic, though they do give you different strains fo some Europeans. They tell you how much of your DNA is from certain regions (you have to allow for the fact that some people will have moved around) but I found that although they got the regions I expected, some of the percentages were impossible because I already knew where most of them came from and the figures just didn't add up.
So really, it helps if you know some things before you start, and it helps if you have specific questioned you want to try answering. If not, be prepared to take some of the figures with a grain of salt.
Also, men get more detailed results than women do - women can only trace their maternal line; so it helps if you have a father or brother who can also take a test.
This one takes a longer view - telling you when your ancestors migrated out of Africa, whether you're a Neanderthal etc
http://shop.nationalgeographic.com/ngs/product/genographic-2.0-kits/geno-2.0-next-generation-genographic-project-participation-and-dna-ancestry-kit
There are lots of other tests covering different aspects of DNA, but I haven't tried them.
https://dnatestingchoice.com/ancestry/provider/the-genealogist/216