Red key vs black key

Fast cat said:

Now that some of you have had time to drive this beast I have some questions.
What is the sound difference between the two keys?
Will you drive with the red one or the black one the most?
Thanks!

Click to expand...

I've had mine for over a week and I haven't even tried the black key yet. I put it in the safe they day I got it and haven't taken it out yet. I am kinda curious what the difference in power is. I'll check it out and see.