David, I'd suggest that you buy as good a saw as you can afford, you will be farther ahead by doing so. The cheaper saws work, but, they don't work as well as a better quality saw, and they don't last nearly as long. You will get better results with a quality saw. I've used numerous low quality saws, and they were more almost stressful to use. It was hard to keep the blade taught, and the vibrations of these cheaper saws is unreal at times. This is no baloney, this statement is based on my own personal experience with numerous different saws. Low priced ones, and a couple of the top of the line saws. I now own an EX21, and I love using it, but, it may not be the saw for everyone, and personally, I think a new scroller should learn how to cut with a lower quality saw. If for no other reason than, to get the experience of doing so.
Len