Although I do have the 15 CD FTM, I received it as a gift. I really like the program, but still have a lot to learn about it's options. As far as buying the 15CD pack, I wouldn't do it unless you get a great deal on it. You can get free lookups at http://genweb.net/~gen-cds/cdlist.html and they list a lot of the CDS. Just make sure that you go to FTM's site first (www.familytreemaker.com) and use their search for your family to make sure they are on any particular CD.