I have EQ6 and I just got EQ7. I have designed a few quilts with the software including the one in my avitar. I love it. I am mathmatically challenged and I have always had a hard time working with graphpaper. This program was absolute freedom for me. I am currently sewing on another quilt I designed on the program.
The only draw back is it doesn't tell you how to put the quilt/block together so you will have to have at least some experience with piecing before you start.