EK Verbal 101 is an EXCELLENT practice verbal WORKBOOK and good indicator, but NOT necessary representative of the type of subject matter, wording, and logic of the real MCAT . (I used KAP, PR, and EK to prepare for the 2003 MCAT and scored 12's on practice tests and an 11 on the real thing). I think that the only negative thing about the EK is that after 20 or so passages, you can pretty much guess the correct answer b/c:
(1) the subject matter is very similar and repetitive (esp. the criminal justice stuff). This can be a +and- thing. You become very accustomed to the writing style and logic of the EK author. This is probably the most dangerous thing about EK verbal. On the real MCAT, every passage will read as if it was written by a different person. This naturally entails diff. points of view, logic, etc..
(2) the logic and wording of the correct answer on EK becomes repetitive (the correct answers on the 03 MCAT is very long and wordy and EACH answer "feels" very def. from one another.)
(3) the answers are just too simple and short and can be easily verified by understanding the gist of the passage. In my opinion, the 03MCAT required the reader to use his/her logic to decipher and crack the meaning of the entire passage more so than merely getting the gist of the passage (as taught by EK, KAP, and PR).
Honestly, improving on the MCAT verbal is very much like doing sit-ups to lose fat on one's mid-section?
Just my .02