08.07.03
Small time Name Registry
There are statisitics on registrars at: http://www.whois.sc/internet-statistics/registrar-stats.html. More info also at: wwww.registrarstats.com and www.dailychanges.com. My top two pics are eNom and and tucows opneSRS. I opted for openSRS first and foremost because it was a unix solution. Second there is active support in the open source community, so there are very stable and robust APIs available in php and other languages. eNom looked nice, they had a bunch of flash i didnt care about. If you use their dns servers, you can have map.xyz.com be a map, among other things.
They are also big on name reselling templates. I dont really like cookie cutting ideas. the openSRS offered a far more customizable method of integration. Also, eNom uses windows servers and ASP. I try to stick to unix when i can, so I opted for openSRS. GoDaddy seemed very competitive to eNom. However, open source is very important to me. Im a sticklier for customizability without reinventing the wheel.