Listen to Ken on this one, and pass on the Great Planes magnetic system. It is no where NEAR worth the money they charge for it. This is the same system I looked at in my LHS not a week ago. I told the guy I was building one, and he asked if I had ever seen the GP system. He opened it up for me, and I can tell you that the plastic fixtures are flimsy and cheap, the magnets are not very strong, and the board is small. You couldnt build anything bigger than most .60 size aircraft on it, and some of those would be a stretch. Besides that, there aren't really enough magnets and fixtures for it to be all that effective as far as I'm concerned. At Tower's price, by the time you figure in shipping, another $50 and you could build a GOOD system like Ken has, and have all you need to build just about anything you want. From what I have seen of the GP system, I can pretty much guarantee that you wouldnt be satisfied with it.