Critically evaluate three different cold traffic playbooks, each designed for a distinct niche (e.g., SaaS, e-commerce, B2B consulting). For each playbook, analyze its core strategies (e.g., content marketing, paid advertising, social media engagement), target audience identification and segmentation, conversion funnel design, key performance indicators (KPIs) used to measure success (e.g., website traffic, conversion rates, customer acquisition cost), and overall effectiveness.  Identify strengths and weaknesses of each playbook, considering factors such as scalability, cost-effectiveness, and long-term sustainability.  The evaluation should culminate in a comparative analysis, highlighting the most effective playbook and providing specific recommendations for improvement across all three.  The final output should be a structured report with clear headings and subheadings, including a concise summary table comparing the key features and performance metrics of each playbook.