At last count, I own 3 Rugers and 3 Buckmarks. The Buckmarks are a cut above the Rugers in looks and feel. The Rugers are a cut above the Buckmarks in overall accuracy, at least in my hands. The Ruger's toughness is legendary. One of my Rugers, a .22/45 has over 35,000 rounds through it in a little over 2 1/2 years and shows very little sign of wear. One thing the Rugers offer that the Buckmarks don't is stainless versions, if stainless is a preference. In extended sessions, ie: >500 rounds at one sitting, the Ruger's takedown lever on the backstrap becomes uncomfortable and digs into my palm, whereas the Buckmark's solid frame doesn't seem to do this. The Ruger design is a bit tricky to field stip until you get used to it. The Buckmark's field strip by removing the barrel retaining screw and the rear sight ramp screw. Lots of folks rate the Buckmark as being easier to field strip, but being the fumble fingered old fool I am, I know it's only a matter of time until I cross thread one of the screws. If you remove the left grip of the Buckmark, the little pieces parts are going to make it a possibly long day for you to put it back together again.(see ref of FFOF above) If you take a Ruger down any farther than removing the barrel/reciever from the frame, you may be in for an equaly long day (ditto ref above of FFOF).
Bottom line: The Buckmarks come in a wider selection, from a basic Camper version to the outstanding 5.5 Target model. A friends 5.5 Target can rival my High Standard on a good day. Ruger also offers a wide selection, but a Ruger trigger is always going to be a Ruger trigger. My friends 5.5 proves that a Buckmark can be made with an exceptional trigger. My Buckmark plus is a very purty gun, is beginning to be broken in enough to shoot like a dream but can sometimes be a bit picky about ammo. My Ruger "slabside" is also a purty gun, but isn't as pickey about ammo. On a really good day on my part, consistantly putting 10 shots(from a rest) into a quater sized hole or smaller, at 25 yards is possible with either line. All my Rugers have passed my informal "shoot a penny off-hand at 50 yard" test, but none of my Buckmarks have yet. Since most sane people don't try to hit a penny at 50 feet off-hand, much less 50 yards, this isn't usually a concern for most, but it does show what a Ruger can do.