The verdict
For most small B2B teams, I'd pick PandaDoc. It handles contracts as well as proposals, it has a free plan to try, and the templates and content library repay the setup time. Start with a small pilot team, because the cost grows with seats.
I'd pick Proposify if you are a sales leader with several reps and you care about approved terms, correct prices and a record of what each buyer saw. The trade-off is the plan structure. Each plan has send limits, integrations start on the Team plan, and approvals and roles sit on Business. Count your proposals and name your CRM before you choose. Salesforce and some other integrations cost extra.