First off no bike is 100% secure regardless of what you have. If a thief has the right tools and wants your bike, then it's as good as gone. Your job is to make the bike less attractive for them and more difficult to take.

Your best bet is to have different types of locks as it requires the thief to have more than one tool. Most cables can be cut pretty easily. Double check your anti theft guarantees to find out what is needed to file a claim.