I would avoid the LCR. A fellow instructor purchaced one specifically for the purpose of taking 2 days of snub training with Michael DeBethencourt. By the end of day 2 the gun was completely seized and had to go back to Ruger. Seems the pot metal they make the firing pins out of is too soft and will begin to peen and eventually jam up the works.
Go with the smith.
I didn't buy either, the smith was $349 this summer, today at the store it was $619, that is crazy.