If you are considering Princeton Review, the only good they did me was in understanding the concepts of "how" to take the test.
I took the ExpressOnline course 2x
was averaging a 26V and when I took the ACTUAL GMAT test...dropped to a 19V
I can honestly say...not real impressed with Princeton Review.
I have had friends say that Princeton Review and Kaplan are not what to expect on the actual GMAT. They are right.
I am now signing up for Veritasprep at $1200, because I am RETAKING the GMAT...do not find my score competitive enough for me.
My advice...if you are having problems in a section (or sections)...look into some review course...self-study did not work for me.