network+ N10-006 and certmaster

I have to say I'm rather disappointed with certmaster for this one. On my A+ I was acing the certmaster questions consistently and performed likewise on the actual exam. With the Network + I got the point of consistently acing the certmaster sections but on the actual exam only scored in the high 600s due to some things that were not covered in enough depth (or at all in some cases) via certmaster. The lack of simulator questions in certmaster is also a bit disappointing since these types of questions appeared on the exam. Thankfully it comes with the "free" retake in the bundle but I'm certainly not going to gain any more confidence for this exam from certmaster and now I know I probably shouldn't rely on it for security+ either.