Label, For, or While loop performance test

• This conversation deserves a blog entry.  
• A: If you find different ways to accomplish the same thing, make sure to test the performance of the code each way at least 3 times and average the results just like in other science classes like physics. I do not see any noticeable difference in any of these implementations. Do you?

  
  
•    B: I think in a small project label goto won't be that big a difference but in a massive project it might make a difference 
• A:  A loop is nothing else, but an if statement with a jump. What you do after the comparison and before the jump does not matter. It will not be a jump that slows your code down, but the block that does the work. If you find an example and you can test for performance issues, than we have a case, but until then this is just a rumor. You will also investigate if the code is using the stack or using dynamic heap memory, since that will affect the performance of a code running, but not he simple jump.

Test results do not show any difference.  Any suggestions, comments?  Please, include sample code and/or testing methodology to show any difference that you might believe exists.