Heavy Barrel Model 10
The Model 10, square butt, 4 inch heavy barrel, used to be the issue revolver for the Metropolitan Police. I first qualified with it in 1980 and carried them on and off for 15 years. Drawn, but never fired, in anger. Despite the 9mm's, 45's and various magnums I owned as a civilian shooter when doing so was legal in this country, the model 10 remains my all time favourite. The next time I get to the US I will find a range and rent one for a few hundred rounds for old time sake.
For a no frills chunk of utter dependability, it was very hard to beat.