Comprehensive self-study tool well suited to my learning style

Strengths:

Self-pacing, thoroughness of included curriculum.

Would make the product better:

It was not immediately apparent that the 'easy', 'medium' and 'hard' tests in each chapter often contained different types of problems; to make sure you've practiced each type of problem from each section you need to take 1-2 tests from each difficulty level. This is not necessarily an issue with the structure of the course, but would have been nice to understand up front.

I found Target Test Prep to be the best option for my learning style and prep situation. I had ~4 months to prepare for and take the test before needing to shift my timing priorities, and due to the nature of my work, I couldn't commit to a live class. TTP's self-paced structure was perfect for me as I could knock out modules when I had the time or spend more time on sections with which I was having more difficulty. The way the course is structured ensures you touch on every concept that could be presented on the test in a variety of ways, and intermittent review quizzes are built in to make sure previously learned concepts stay fresh in your mind. I naturally struggled most with the quant section of the GMAT focus, and the TTP system drastically improved my abilities in that section - the way concepts are taught and layered sequentially makes complex problems easy to digest and tackle. Overall, I would highly recommend TTP to anyone who works well in a self-paced environment.