I started with eq5, upgraded to eq6. Use it often, have scanned my own fabrics and faithfully get the monthly fabric libraries from the EQ site.
The EQ site also has great tutorials, and mystery quilts - designed to teach you something new with each monthly installation. There is also a discussion forum there to ask questions.
I've also found a scattering of fabric libraries from fabric manufacturers that can be imported into eq.
Something that I've noticed, is that I found I learned a lot about block construction by analyzing quilts I was seeing and then trying to figure out how the blocks would go together by playing in eq.
So I've loved it for a long time, keep learning new fun things! I definitely recommend purchasing.