Back in the day, I never wanted a 10-5. I thought they looked quaint and old fashioned. They always made me think of the cops in those old black and white movies who wore those long heavy greatcoats, and carried their revolvers in a pocket in the coat.
Today I like the Model 10 because it looks quaint and old fashioned. And they shoot great. It doesn't really matter what - (dash) model they are, or even "pre-dash" M&P's.
5" 10-5 from 1969
4" 10-7 from 1979
A M&P from 1947.
With a couple boxes of brass, a Lee-Loader and some components, you've got fun, inexpensive shooting for a good while.