I wanted to add to the recommendations for the EET course! It was by far the best learning experience I've had.
I took the School of PE courses for both vertical and lateral for my first attempt at the exam in April 2017. I thought the courses were decent. Along with supplemental studying, the SoPE courses got me to the "borderline" point and I failed vertical (barely - 27/40, A, A, A, U) passed lateral (likely also barely).
I then took the EET vertical course for my second attempt at the exam. The EET course was far, far superior! I thought the course prepared me incredibly well, and I felt confident both going into and coming out of the exam. (Of course that confidence wore off after 2 months of waiting for results and I was suddenly very worried about results, but I think that's how it goes for most people.) I was able to pass the vertical exam this past April (2018) despite the 18% pass rate for repeat takers.
I think the biggest item that sets the EET course apart is the amount of quality practice problems you receive - especially since there aren't a ton of practice exams out there. EET provides hundreds of HW problems, several mini-exams, and a full length practice exam. I supplemented the EET course only with additional long answer problems from the two available practice exams.
I thought the EET course was very intense and time consuming. I was able to keep up with the vertical course, but I am curious if anyone else has had success trying to keep up with both the vertical and lateral courses at the same time. If so, what was your approach/did you start early with on-demand?