My take on mystery method, it is great for starting, doing Mystery method for 6 months or something can get the shy guys going, if you do my 6 month plan (you can find it) and mystery method 4 times a week for 6 months, I think you can easily start doing natural game and for the most part just quit thinking and start doing. Mystery method will help you learn to Calibrate, and I think even Mystery says at this point that the goal is to eventually not need the canned stuff.
edit: And to add to that, me belief is that you should read 1 e-book, learn it inside out, and then go and do it for a good 2-3 weeks, at least 3-4 times a week. Then you can read another and add on to your tools. I talk to guys all the time and they read all of these e-books, they think "Oh man, I got new tools, this will help me" and they stay at home on friday night reading jugglers or mystery instead of going out and trying the double your dating that they just read.
For me the only ones Ive done is
Annihilation Method dvd (lots of great games, I love this stuff, I use these all the time with me niece and nephew as well)
Mystery Method (good for beginners on opening and calibrating)
Double Your Dating (this guy has good insight on how women think, and good advice)
Hypnotic's Confidence DVD (just good for life)
Authentic Man Program ( I actually use this and vommit up all the energy sh1t that they say, women go nuts "I have learned that women don't speak with words, they use feelings, they can feel the other person, and I can feel you" - sounds sh1tty it works if you say it confidently. In fact, 9/10 times they go a bit red in the face, and I tell them look you're blushing! I use this tool almost every pick up.)