I love the V-cut. Good smoke flow and pretty foolproof, with nearly no chance of damaging the cap or having the cigar unravel. For a more open cut you can double v-cut your cigar (as in X or + shaped cut). Unfortunately, I don't have a v-cutter at the moment. I used to use a punch mostly, and still prefer punches for short-filler cigars, but punches don't work well for pointed tips (belicoso / torpedo) so if I'm away from home I end up having to bring a 2nd cutter anyway.