In my opinion the boxcutters that use single-edge safety razor blades (aka "GEM" blades) are better for cutting carboard, tape and leather. They stay sharp much longer because the blade's thinner, and refills are cheaper, too. For cutting drywall, though, the ones that use thicker, pointy utility knife blades are better. (I just use a utility knife for that.)
I have my favorite kind of boxcutter in my pocket right now, which I just noticed says "Handi-Kutter" on it. The company's changed their product name to "Nifty Kutter" at some point but they are still in business.
If you're active they wear out on the folded metal edge after many years of banging against your pocket change. Some people prefer these kind, which have a steel casing and last much longer, but I find them more likely to creep open in the pocket:
Both kinds are available as promotional items, with whatever you want stamped into the aluminum or painted on the steel.
Edit: substitute .png images for gif/jpgs, add Nifty Kutter brand name.