What's Your Scalping Edge: Setup Type, Session Timing, or Execution Speed?

Every elite scalper has a specific edge — but I've noticed it tends to fall into one of three categories: **Edge 1: The Setup Edge** You have a very specific, repeatable setup that you trade with higher-than-average win rate. Maybe it's the Asian range break at London open, or the VWAP reversion. You win because your setup is genuinely high probability. **Edge 2: The Session/Timing Edge** You know WHEN the market is most predictable and you only trade in those windows. The London open from 8:00–8:30 GMT. The NY open first 30 minutes. **Edge 3: The Execution Edge** You have the fastest broker, best platform, tightest spreads. You win not because your analysis is better but because your transaction costs and execution quality are significantly better than retail average. Most elite scalpers combine all three — but there's usually a primary differentiator. Which of these three would you say is your primary scalping edge? And what's one specific thing you've done to build or improve that edge?