The verdict
If you send email regularly and the weak points are design and reporting, I'd pick Campaign Monitor. If your campaigns bring traffic but sales say the leads are thin, I'd pick Outgrow, and use an ROI calculator or readiness assessment on a high-intent page.
Many teams need both in the end. Test the hand-off from one quiz to your list before you commit.
If you only need contact forms, you need neither. Typeform, Tally or Jotform will do that for less.