I had the pleasure of Kris administering the CompTIA Security+ / Network+ boot camp in 2019. The class and material provided was critical to my achieving the Security + certification. I also found the Security + course work and material highly correlated to the CISSP course. He does a great job going beyond the basic material and test prep by providing practical application and demonstrations.
I absolutely had no issues whatsoever with CertFirst support team. All obligations were met to expectation of quality in a timely manner. Includes deliveries of exam prep tools, study material, and virtual class related correspondence.