Not having unlimited funds, or space to store, I try to be selective, asking myself what purpose a prospective purchase might fulfill.
Since you're already in the process of purchasing a nice Smith & Wesson model 10, what is the point of acquiring a mediocre to poor quality knock-off?
Where the S&W would bring pride of ownership and enjoyment through use, could the same be said of the Ruby?
When I first started shooting, and was looking at 22s, a couple of cheaply priced revolvers like Ruby, H&R, Rossi, etc crossed my path. Rough & gritty was pretty standard, with questionable alignment of cylinder & bore. These can be even be unsafe for nearby bystanders, as they spit lead shavings out of the b/c gap.
I would have a hard time justifying that thing from just taking up space in my house!
If you just walk away, I doubt, in the years to come, you would ever say "Gee, I really wish I bought that Ruby".
Jim