For the same amount of money, you can get a .357 which can shoot both .38 and .357. This way you always have the option of shooting a hotter load. Personally, I like a 4" bbl for more accuracy and increased velocity. A wheel gun is a great choice for supreme reliability.
Thanks. This would be for in house defense only, so distance would be 25' or less. Anything outside, it's the 12ga semi, salt in the chamber and alternating shot and pumpkinball afterward. :)