I don't think you'll find many people who have Quilt-Pro 6 and EQ8 and who also paper piece. In general, I would guess you will find more information and support available for paper piecing with EQ8 simply because Electric Quilt has been a much more popular software than Quilt-Pro for many years. Which one would be easier to use, I don't know. I have QP-6 and EQ7 but don't paper piece, so have no idea which one might be easier to use for that purpose.