I agree with sinful. There are a ton of effects, sleights and applications.
And almost everything is adaptable. You should read the descriptions of the sleights in three and see if it sparks any creativity.
One has very good, powerful, complete routines. Cameo is pretty simple to learn, and if you already have a sandwhich routine you could probably take something from it to use in yours (I like to use the first step, I do the second one differently, and then end with the third step)
Fatal is also something I enjoy doing occasionally. It's not something I do all the time, but when I've done it-it's gotten good reactions.
Two has been the least drawn from, so far, I have been so busy with other things in magic that I haven't had a chance to sit down and re-read through it. I'm sure there's something I missed...
Hope it helped.
-Rik