Everyone gave good advice. Even MN if you wanted a small lock blade. I have recently taken a spell and am carrying a Model 444, its so light you don't know it there. Sort of a 501 on a diet. But.......
Everyone has hit the nail on the head with the 301 and 303 but as is too common a case, American made ones are getting difficult to find for some as the big box stores carry the cheaper cost imported Bucks. But to answer all the questioners on this, Buck is still making at least two versions of each knife in Idaho. You may likely find one in a farm store or good hardware store out in countryside of Maryland but will have to go to a national chain hunting and fishing store if your in a bigger city. Several good online stores have them also, including Buck. Currently I believe they are offering a 40% off from the Buck Website. I do enjoy finding one in good shape at a flea market or pawn shop so have at it if that makes you feel good. Like Bert I am a 303 guy, mainly because it fits in a jeans watch pocket just a little better than a 301....But, a 301 is a good handful of knife to really cut stuff with . Good Luck. 300Bucks
PS As long as you looking for used Bucks, watch for a 307, which is a stout 3 blade slip-joint any mariner or cowboy would be proud to have. And its big enough you know its in your pocket.