I have a Colibri dual-blade guillotine cutter, a few punches at various sizes, and I just picked up a really nice V-cutter. So far the V has treated me consistently the best, but I have to use a punch when I am on the road since the others are not legal to carry on in my suitcase (which then limits the shapes I can bring with me; nothing w/ a pointed end! Sorry, torps and belicosos...). What do you guys prefer and why? Have anything stellar that you would recommend?