You should try and identify what kind of quilter you are first. If you primarily like to do quilts from patterns exactly like they are, then EQ would be of limited benefit I think. However, if you look at a pattern and think that it would look better if this were here and that was there or if it were different dimensions, colors, etc. etc. then EQ is great for that. If you are a piecer rather than into applique or photo-realistic quilts, you might want to go for the earlier version EQ6 or even 5. The downside to 6 is the limited number of installs.
I've used it since ver4 and am happy both with the program and the customer service, but have never actually designed a full quilt. I mainly use it to test ideas out.
Diana