Today I have 160 matches at FTDNA in the Family Finder autosomal DNA database.
I have 998 matches in the 23andMe Relative Finder autosomal DNA database and around 700 unique matches in the Ancestry Finder database. 23andMe includes X chromosome matches which are not yet posted by FTDNA.
While I have more matches in the 23andme database, I have made more identifications of the ancestral couple in the FTDNA database. Testing with both companies remains the optimum strategy for finding genealogical connections.
Even though I have 10 surname projects at FTDNA, for autosomal and X chromosome DNA testing I recommend using 23andme first, and when they make it available, transferring your genome results to FTDNA to get matches against their database. This will cost the least for people in the USA.
The only other company I currently recommend is the Sorensen Molecular Genealogy Foundation, http://smgf.org/ They test Y DNA, mtDNA, autosomal DNA and X chromosome DNA. You can get tested for no cost if you meet their research requirements and submit a pedigree chart. However, there is no guarantee they will post your results on their system. They have made the Y DNA and mtDNA databases freely accessible on their website. It is anticipated they will do the same for autosomal and X chromosome DNA. They also sell access through GeneTree, http://www.genetree.com/ People who do not qualify for free DNA testing at SMGF, can pay for testing at GeneTree.
At this time, I am using DNA testing to verify my documented genealogy. I think it can be a very good check against one's paper genealogy.