Seriously, ask yourself: How would it benifit you to choose: (a.) a smaller DNA outfit, (b.) a company that does not "specialize" in genetic studies, (c.) a company that proffits from document distribution & access, or (d.) a company that wrote the book on genetic studies, has largest professional DNA community and resources..?? with the best Bang for your Buck. Summary: by Mike G., "Review your goals, it's your choice!!!" "I do not receive anything for my efforts, this is strictly info to help you decide."
1.) 90% of genealogists choose Family Tree DNA – with the Largest DNA database.
2.) As of August 8, 2011, FTDNA has a total of 342,395 records! Whether your goal is to verify your genealogy or to discover your deep ancestral origins, the size of the testing company's database is of fundamental importance. To get the best and most accurate answer, you want to compare your results with as many others as possible, which means choosing the company with the largest and most robust database. Family Tree DNA is in the lead, their databases are several times larger than "ALL THE OTHERS COMBINED.."!
3.) Paternal Y-DNA test categories: Y-12, Y-25, Y-37, Y-67, Y-111.