Good choice. This can be debated for days, but I think you will sleep better with a decent revolver. If you need more than that, well it just wasn't your day.
My home defense gun is a 4 inch .357 (with .38s since I share a wall with a neighbor and don't want to shoot him).
I don't have experience with S&W, but have heard a lot of bad things about Taurus. You might want to add Ruger to your bake off with S&W as Rugers - ugly as they may be - are solid.
"I'll die before I surrender, Tim."