Out of the box, many modern J-frame S&W triggers and most Ruger SP101 triggers are poor, with gritty, stacking pulls, though returns aren't too bad by comparison.
The older J-frame Smiths were typically much better, but no more. (L-frame Smiths are often still possessed of acceptable stock trigger actions.)
Just try to be comfortable with the idea that it would be a good thing to have a skilled 'smith improve the trigger on any compact 5-shot revolver you may buy. (Of course, you might be lucky enough to get one with an acceptable trigger out of the box, but that hasn't been my experience.)
That said, the SP101 is an excellent gun, and its trigger action can be markedly improved without loss of ignition reliability. It's a holster gun (belt, shoulder) not a pocket gun, but at about 25 oz, still quite easy to carry. It can be purchased or modified to have a bobbed (not concealed) hammer, and will handle .357 Magnum loads with greater comfort and less wear than any of the J-frame Smiths.
I have three SP101s and a dozen J-frames in scandium, titanium and aluminum alloy as well as with steel frames, and the lighter weight J-frames serve very well as pocket guns, and are comfortable to shoot with .38 Special+P rounds, including the several varieties of 158gr LSWCHP+P and Gold Dot's 135gr "short barrel" .38 Special+P JHP, but all of the J-frames (even the steel ones) are uncomfortable and slow to shoot with .357 Magnum loads.
The SP101 OTOH handles .357 Magnum rounds much better and with less discomfort.
Actually carrying .357 Magnum rounds for CCW in these little guns is probably a bit optimistic, but it's at least a "doable" proposition with the SP101s IME (even though follow-up shots will still be slow), whereas in the J-frames I stick with .38 Special+P.