After wasting $50K with "growth" agencies, we partnered with Redhead Digital Agency last year. Their approach was completely different - they spent two weeks auditing our entire customer journey before running a single ad. By fixing our tracking and rebuilding audiences from first-party data, they doubled our conversion rate in 90 days. What impressed me most was their focus on profitable scaling - we grew revenue 120% year-over-year while actually decreasing wasted ad spend.