Revolver
Personally, I would get a Smith and Wesson M-66 4". It is relatively light weight, robust and accurate. You can find good used ones on the market (alot of police trade ins) check with KY imports (KY as in kentucky not the personal lubricant).
It will shoot .357 mags but not meant for a steady diet of the hot stuff.
If you want the creme of the Smith crop look at the 686 or 586 if you like non stainless steel. It will handle anythinig you feed it and not wear out.
Both will shoot very well with light .38 loads.