I was very skeptical at first, most "enterprise class" security products tend to be sketchy upsells for products that promise a lot but don't deliver.
I was very surprised by the incredible responsiveness and pro-active stance that Wordfence takes, their intelligence into the WP threat world is invaluable.
Their e-mail updates are concise and informative. The interface is excellent and their overall vigilance in every aspect of their product and service is incredible. EVERY WP installation should have Wordfence installed.
You can believe the hype, Wordfence does MORE than what it says on the tin.