I had opportunity to purchase any of the plinking/target .22's in the last few days. Anything from a Neos, to Buckmark, Smith, Ruger Mark II & Mark III.
Today I bought another Mark II. This one a Target stainless slab side.
Yes, out of the box the Buckmark has a better trigger. But for less than $12 you can install a spring kit from Trapper in the Ruger. I personally think it's every bit as good as the Volquartson spring set. Then add a Volquartson Trigger. While the inards are out, just take a little off the sear and polish with a dremmel tool. (carefully!) If you mess it up, You can get another from Ruger or elsewhere quickly. There just aren't that many after market parts for the Browning. Don't get me wrong, the Buckmark is a fine pistol for the price and every bit as accurate as one would expect. Most of "us" can't shoot as well as the plinkers really can. (if you take time to test different ammunition)
As for some of the features of the Buckmark, The Ruger Mark III and 22/45 have the side mag release button, a loaded chamber indicator. I'm not sure that the Buckmark is available in stainless. (the whole gun). The Mark II & III, and 22/45 Target models are drilled/tapped and come with a scope mount and rings.
I chose the Ruger. Just personal preference. Take down is different than any other plinker. But field stripping requires no tools. And once you learn how it works, it's a snap process.
How's the Trailside. I hear from fellow Bullseye shooters that they feed anything, but one in seven has a trigger the big guys need help pulling. Be very selective when buying one. They are accurate though. The Magazines for the Ruger are the cheapest, and still made of metal. The Trailside mag prices are out of this world. (The word Hammerli must have something to do with that.) My new Ruger came with an extra mag.
-Steve