You might care about your cert. However, your users do not care at all. Most users (not most HN readers!) have no idea what is the difference between certificates.
Do you really think users pause to check what type of SSL certificate the site has? .. And what CA had signed that certificate? They don't -- even when they access their bank.
When you care about your cert (validated, EV, etc): DigiCert. When you don't care that much: RapidSSL from Namecheap.
The end.