The best thing about a Ruger Revolver is that they will work, pardon the pun but they are near bullet proof.
That said there is nothing wrong with a S&W if you want a little more polished bit of finery, but then your looking at some serious $$ more for essentially the same thing.
Buy a Ruger you wont regret it, a revolver trigger shouldnt be too light in anycase unless your using it for serious comps, for plinking, and genral use factory set is probably ok. If its rough then if your not capable of doing it get a smith to polish it, will still work out way less cost than a S&W.
Hell buy two one for you and one for the kids to build up to, you can load .38s so mild it offers no more force than catching a pea with a baseball glove.