Help on which poker book to purchase

[Derelique]

I am looking to purchase a couple books myself. Two to be exact. I have been playing poker for a little over 6 months now, and feel I have the very basics down, but would of course, love to improve my game. I mainly play tournament hold em's, so which of these two books would you guys recommend as the ones I should first look into?

Hold'em Poker: For Advanced Players - David Sklansky
The Theory of Poker: David Sklansky
Championship No-Limit & Pot-Limit Hold 'em - T.J. & Mcevoy, Tom Cloutier
Tournament Poker for Advanced Players - David Sklansky

I am mainly a tourny player.... I don't know whether or not I should buy both the championship no limit by T.J or the tournament poker for advanced player. Any reviews?
If you must pick two, which would you purchase?

Thank you.

[Koller]

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If you must pick two, which would you purchase?



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Tournament Poker for Advanced Players - David Sklansky
The Theory of Poker: David Sklansky