The J frame is more versatile. It's light,and compact, for pocket or belt carry, however it kicks like a mule with 357 loads so I generally load it up with LSWHP 38 +Ps.

If my 4" K frame had a 3" barrel I'd definately give it a whirl for IWB carry. No pocket carry with this one. Added weight for dampened recoil is a plus. The longer sight radius, although pretty insignificant in an in your face confrontation, is better for longer shots. That sixth shot may be just the thing to let you know you have'nt practiced enough or your up against more adversaries than you can handle! I definately would rather have the 357 round workin for me. Oh and the heavier gun would make a better bludgeon too!