I did PRG, which is actually the "best", and passed easily on my first try, but it also contains more material than you will need to know just for test. I think PLI is just fine though if you are only using the materials for bar prep. Also, doing old questions is half of the studying, bar review courses aside. I explain the whole study process in more detail in some of my past posts.
Stay far away from the other courses, the quality drops drastically after PRG and PLI. You can buy used copies of either of these courses and most likely resell them for most of what it cost you.
-3L Patent Agent