I have the same issues you do with figuring yardage, size of blocks etc. I went to the Quilt Design Wizard website and love what I saw. It is $29.95! I have been very frustrated and have gotten some help from LQS and my husband but I would prefer doing it on my own. I also love the idea of seeing the finished product on paper BEFORE buying and cutting the fabric. I am not a professional but enjoy making quilts for family and friends and just can't jutify the EQ price. Thanks for asking this question.
Liz