Unbounce looks great- I've been sitting on the fence about these types of service for a while now. What is HN's opinion on using a free version of a Unbounce (

Unbounce looks great- I've been sitting on the fence about these types of service for a while now. What is HN's opinion on using a free version of a Unbounce (or other service)? (Coming from a student creating a start-up, no savings what so ever right now) Does it distract from the purpose of the landing page heavily? Does it add credibility? My quick and unprofessional opinion is that I would rather have the paid version, but since I have to really value what little money I have, I'm unsure if paying for a landing page service is wise or not.