Just providing my feedback on my overall experience with Whizlabs and passing the exam.
I'm sure most of you have been using material from other sources such as Linux Academy or A Cloud Guru, which are all very helpful and should be used to get the general knowledge of what to expect in the exam.
From my experience, I watched all the videos on A Cloud Guru, took all the tests and practice exams, and then booked my exam within a week. During that week, I tool all 7 exams from Whizlabs, then retook them a second time to make sure I scored 100% on each.
This is sufficient to passing the exam as most questions on Whizlabs were in the exam.
Good luck guys!