For purely accuracy, the 617 that I used to have was very nice. Even with cheap Remington Golden bullets it was wonderfully accurate.
For pure plinking fun, I like the Ruger Single Six that I have now. I haven't tried a single 10 but I figure they are just as fun, and since they aren't convertible models, maybe they would be more accurate than mine.
(My Single Six is still more than accurate enough for plinking fun though)
I am no longer participating in gun forums.