Could some of you give me input to make a good decision. I would like to have a male Cogburn relative take a DNA to tie our grt-grandfather to a family line as we have searched unsuccessfully to determine his parents. I confuse myself as there are various dna's, different companies, etc. Some recommend one test and some another and I probably have one shot at this so want to do it right. Any help, recommendattions, etc would be very appreciated. ...and are there enough in data bases that this should be hopefully succesful? Thanks!