I don't understand how they want you to measure your current belt? is it from the tip of the buckle to the hole you use when you cinch it up?

The pic there looked weird...

But I would like to try this one out since I just dropped $110 on the horsehide belt. And this one is a little cheaper...

Also should I just get the instructor belt or get any of the stiffeners? I need to check out the site - I assume it tells you on there what the different stiffeners are.