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.