How would you compare the burn using a V-cutter vs. a punch or guillotine cutter?
A: Actually, you will get a smoother and less tarry smoke with a wider opening at the head. I like the V-cutter for some cigars like Torpedoes, but use the double-blade 99% of the time.
One alternative would be to use the V cut, but bite down a little as the cigar smokes to open it up. This may help prevent some unwanted bitterness in the final inches.