Are non-corporate BlackBerrys secure?

With the utter lack of privacy nowadays, I think it is becoming increasing important to think about communication security (obviously). Now, we all know that BlackBerry is the best for security, but are any of these advantages there for non-corporate BlackBerry devices? For the non-corporate BlackBerry owner (most people), is there any advantage to having a BlackBerry over an Android or Apple phone when it comes to security? What about BBM over WhatsApp etc.?

Posted via CB10