Just my two cents, but with work experience, when I am preparing for CompTIA exam I focus on CertMaster Practice as my main tool and supplement CertMaster content for areas that cause issue. Also, remember that SecurityX is a culmination of the security path, so if you have Security+, CySA+ and PenTest+ or any combination, you will see similar types questions on the SecurityX exam. To me, that makes it easier, similar to Network+ before Security+.
I have heard from folks that the labs in CertMaster perform are pretty good. So, I think you should be in good shape using the tools. Too me, it is understanding how the exam questions are worded and the terminology, which is why I like CertMaster Practice. Again, just my two cents. Everyone prepares differently.