Since I haven't really been smoking alot lately I have not really been inclined to buy a decent cutter.
However, I did find an old straight razor at a thrift shop that I have managed to bring to a "razors edge", (forgive the pun).
That seems to work well enough seeing as how I normally smoke on my porch. In the event I am somewhere other than my porch, I find that the hotel bar that sells cigars has a punch and a decent cutter in the humidor, and if I am at another smokers house, they have suitable instruments for taking the end off of a cigar.