Which SSL certificate is suitable for your purposes depends on the nature of your website and your desired level of security. For private use and smaller projects, a DV SSL certificate is more than sufficient. However, if your scope is larger or more complex, then you should consider an advanced certificate type, i.e. OV SSL or EV SSL. Both certificates guarantee a high level of security, but the EV variant is even better, as it provides you with a browser address line where the green color indicates the highest level of protection. Besides, your company name will be displayed to users, stipulating the seriousness of your website.