I've been doing "This" for 20 years. It's great but Kozak's comments are very pertinent as relates to "This". I bought the Bottle Production, quite frankly, as my bottle production i.e. "This" was wearing out. Kozaks comments and suggestions are very good and relevant. His modifications, except for one, are very good. My only comment is that his scarves, I think, could be smaller. In my mind the size of the scarves pretty much indicates that something is about to happen. Now that may be because I'm very particular with what I do. You'll have to make that decision. Last, I think it's overpriced. Granted the trick has a great deal of thought and everything has been has worked out as Kozak states. I just think it's too much money for what's received. There is also supposed to be a performance on the disk. This is missing. But you can find a performance on U-Tube. Those are my thoughts.