ProConnect is designed for professional preparers, so "knows the tax forms" is a reasonable assumption. It's very similar in structure to Lacerte, which IMHO optimizes for efficient input when you know the desired output, rather than "I can enter information directly off my client's 1099s and rely on the software to determine what output is correct."

ProSeries is more TurboTax like, so if you're making the switch to preparing returns for compensation, it might work better for you.