I used ravgen and they were 100% correct
Someone wrote in recently on the DNA/Paternity forum on this site that she had one with Ravgen and it came out correctly, and was confirmed after the baby was born. It does depend what lab you use, with Ravgen and the DDC being the ones to trust. Don't go for one of those cheapie labs on the Internet -- women write in all the time that their samples got lost or they got wrong results.