[POLL] [SAAS] Which of these plans is likely to generate the most paying customers?

Looking to pick the collective brains of this community to see which option is the best for a SaaS website providing B2C services within e-commerce industry.

I understand there is a different answer for each case which I'm happy to hear your explanations in the comments, but in terms of the poll, which would be most common to work?

Would also like to know which trial periods work the best? 48 hour free trial, 7 day trial, or just 30 day money back guarantee?

Thanks a lot for taking your time to read & contribute, its truly appreciated!