I sure do like my S&W Model 65 - 3" barrel, round butt, 6 shots.
If that's too big I have a 2 1/8" S&W 649 in 357 Mag. It's all steel and is not the lightest thing out there, but it still has become my daily carry gun. I regularly drop 8" steel plates with it at 25 yards, usually single...