With a couple exceptions, I've found most tools by Top Flight and Great Planes to be nothing more than gimmicks that don't work. They're the kind of companies that try to convince you that you can be a master model builder with no skill.

The Great Planes magnetic building board is a pile of junk. Other than the magnets themselves and the board, all the accessories are about as cheaply made as possible. Also, it doesn't come with nearly enough magnets. I found the magnets through another source for $.055 each and bought 200 of them. Then I built my own fixtures and now I have a top-notch building system.