Modern Warfare 2. Intervention or Barret .50 Cal?

In Modern Warfare 2 there aren't very many options when it comes to quickscoping sniper rifles. Some guns such as the M21 Ebr or the Wa2000 are just not meant for quickscoping. Most of the time quickscopers use the Intervention sniper rifle. The other main option for a quickscoping sniper rifle is the Barrett .50 Cal. In my opion, the Intervention is more powerful and takes more talent to use rather than the Barrett .50 Cal. However, the Barrett .50 Cal takes less time in between shots and has more rounds per magazine. When it comes to accuracy, I believe that both are the same. It just depends on which gun your prefer personally. I prefer to use the Intervention mainly becuase I tend to experience greater accuracy and it is more challenging for quickscoping. Although when hardscoping at a large map such as Afghan,  using the Barrett .50 Cal may be more effective. When playing Search and Destroy, the majority of the gamers use the Intervention which helps my theory that most online players prefer to use the Intervention as their main sniper rifle. Tell me what you think and what sniper rifle you use in Modern Warfare 2!