Domain validation SSL certificates don’t require fancy validation and are issued before you can say “blueberry pie” (well, to be completely honest, it takes 5-15 minutes). However, the Certificate Authority may select random orders for additional brand validation.
A wildcard SSL certificate is necessary whenever subdomains are involved.
Extended validation SSL certificates are the most hacker-proof certs in the industry. Every applicant organization must pass a thorough verification procedure carried out by a Certificate Authority
We use the BEST in the industry, see them by yourself.