Will Hanna has done a breakdown on this, not sure where to find it now. But the difference might not be as big as you would think, from what i remember of Will's comparison. Like most things, it's also very situational. The biggest factor of course is carnage. In either combo, if you don't have the right tuneup and you're chasing a learning curve, it'll get expensive. Not sure if Will posts here but if he sees this maybe he'll review it again.