No worries - you are more than welcome to disagree with me - moreover, I would encourage it and hopefully you can work out a better approach, which I am happy to peddle, sell and push

True - I used Kaplan and feel the Kaplan Math Workbook is a good GMAT math book.
Kaplan Premier - it is too fat right now. Way too long - 650 pages! It should 300 or 200 for what it has. Definitely not enough, but I feel it is a good book to start with and a source of some tests. Kaplan verbal is not very close to the actual GMAT (I definitely noticed it) but it is not destructive.
Finally - I am cheap, so I feel it is a good value for the money, assuming you are aware of the pitfalls.
I originally scored 540 on GMAT Prep and after 3 months with Kaplan books went up to 750 - definitely doable and it was probably a harder way than using PowerScore or
MGMAT, and definitely less elegant.
Now, I wish I got paid every time I said Kaplan. Probably should lay off a bit.
On a serious note - let me know if you know of a good alternative approach to what I am outlining on the website (books, study plans, etc) - just in case my approach is too old-school - would love to hear some fresh ideas and learn from the latest generation of test takers.