I'm currently considering one as my next purchase. I tried out a Buck Mark standard 5.5 vs a Ruger Mark III Hunter at the local range a couple weeks ago. No serious complaints about either one. Liked the 5.5" barrel better than the 6 7/8", and preferred the standard sights to the fiber optic. Not sure what to think of the new safety features on the Ruger.
I plan to use it for squirrel, plinking, and maybe some target shooting. Kinda leaning toward a Buck Mark Field 5.5, vs a Ruger Mark III 5.5 stainless.