David Sklansky Books Question

[projectaero]

Hey guys.
I am wanting to buy a few books especially of David Sklansky and i have noticed that he has alot where he updates all the time.
And from what i have seen some books are basically updated versions of the others.

Here are the books i can order but need to know if any of them are revised versions of the other book or if they have taking one book and put it into a updated book.

The Theory of Poker
Small Stakes Hold 'em
Tournament Poker for Advanced Players
No Limit Hold 'em: Theory and Practice
Hold'em Poker: For Advanced Players
Poker - Texas Hold 'em
Seven Card Stud: For Advanced Players
Getting the Best of It!
Sklansky on Poker

Cheers guys.