Well, I guess the K2 MIGHT be the stiffest boot out of your 3 original choices.
Having used 2 of the three, and the maysis, I can say they are all very stiff. I'd be surprised if there was ever a stiffer boot than the insanos.
The only way you will ever know if a pair of boots will work for you, is to get them on your feet.
If you don't want stiff boots, the insanos, and the focus boa's aren't for you.
Last edited by J.Schaef; 11-10-2010 at 12:42 AM.