I've used S&W knives, and I can say they dull pretty quick, at least one developed blade play within a couple of days, one has it's lockup frequently get stuck(the liner lock actually goes too far, it goes totally past the pivot, and gets stuck, you have to actually use something to pry it back to it's proper place if you want to close the knife). They make some fun knives(the S&W framelock karambit I have is actually a really fun knife, and no issues other than edge retention), and some decent looking ones...and if all you ever do is open boxes and envelopes, they'll be fine(as long as you don't mind sharpening, as they tend to dull quickly). But if you want a knife less prone to breakage or blade play, one more likely to hold up under a bit more stress, like other people said...spend $20 or $30 and go with a Kershaw or Buck.