Quote Originally Posted by Blu (Ontario)
What's your preference and why?
Blu

When a Scotsman is kneeling to pray, the kilt should not touch the floor. When measuring for the proper length, the easiest way to maintain this OLD tradition is to kneel on the floor, and drop a measuring tape from the top of the pants beltine to the floor, off the side of the body. 8)

Beyond that, it's really a matter of preference for the modern kilt-wearer. I've noticed the inch-below-the-knee look as being prevailant lately.