I do not know quite why you want to buy all those books. What is it that you are looking for? The plan comparisons available on this site give a good appreciation of what the various themes are.

You have more or less discarded PP which is the one I bought after Atkins and would recommend because it might "do your head in".

So the question for you should not be - which book to buy, and if in doubt buy them all but why do I want to buy another book?

You seem to be searching for something that you think is out there and might just be the magical answer. In truth you probably know already all the important stuff there is to know about low carb. This site and fitday are perfect carb counters and most stuff bought over the counter have nutrional labels these days.

If you really do want to go and buy them all then I suggest that you divide them into two piles and put each pile in a bag with handles and the use them to do your weight exercises with. This will do you the most good.

Trying to look after your health and your pocket.

R