Chess book suggestions

Im a cheap bastard. No way around that. I really hate paying for something thats just not worth the price or the effort. Ill tell you this. This site is worth both. But thats another topic. My issue here is regarding chess books. I want to buy one. Not living in the US presents a logistical complication. 12 bucks to you overnight translates to 20+ to me in 2 weeks. Not a big deal at all. But i need for it to be WORTH IT. Here are my options please BURN and rip these appart or if youre in the mood provide some alternatives. What am i looking for in this first purchase? Not really sure, a bit of everything i suppose. But i would like to focus on strategy because i believe its the one thing the programs and the experience of many games does not seem to teach.

1- Modern Chess Strategy by Ludek Pachman and Allen S. Russell (Paperback - Jun 1, 1971) - Abridged
Buy new: $12.95

2- Chess Strategy by Edward Lasker (Paperback - Jun 1, 1959)
Buy new: $10.95

3- Practical Chess Exercises: 600 Lessons from Tactics to Strategy by Ray Cheng (Paperback - May 15, 2007)
Buy new: $17.95

4- Secrets of Modern Chess Strategy by John Watson (Paperback - Mar 1, 1999)
Buy new: $29.95

5- Winning Chess Strategies, revised (Winning Chess - Everyman Chess) by Yasser Seirawan (Paperback - May 1, 2005)
Buy new: $24.95 (This series has been highly recomended by a mentor)

6- Complete Book of Chess Strategy: Grandmaster Techniques from A to Z by Jeremy Silman (Paperback - Jul 1998)
Buy new: $18.95