I think some of the current .38 +p loads are as good as you can get out of the snub nose package. I wouldn't feel underarmed with 5 good .38s. I would prefer the ability to practice more comfortably and be better skilled with my piece than carrying something that I am subconsciously afraid of and might flinch when I need to make a critical shot.
If you are set on .357 try a S&W in stainless steel or an SP101. I have a 3" SP101 and with the stock rubber grips and 125 gr loads is awesome to shoot, though it produces quite a bit of muzzle flash but recoil isn't as bad as my P3AT.