Smith J-Frame vs. SP101
Personally I prefer the SP101 of these two models. Loved the way the Smith felt and the trigger, but it was no fun for full house 357 ammo, and I never mastered shooting the thing accurately. Even with 38 special ammo, it just never felt right and consistency was nonexistant.
The SP101 with 4" barrel handles full house 357 ammo a lot better, and with 38 special ammo it shoots measurably better than the J Frame.
Better half has a Smith 66 with 4" barrel. It is our go-to gun for house and car. If you can get a Smith K Frame, they are a really nice size, and balance well and are quality firearms. IMO