I couldn't make up my mind so I tried several. My usual pocket carry is the S&W lightweight 442 or the stainless 640...both with internal hammers. With heavier clothes I carry the 44 special Night Guard or the 3" seven shot 686+. I've tried them all at times and like them all for different reasons. The Ruger SP101s are great guns but they are larger and heavier than the Smith J frames. The 6 shot Colt Detective Special is an ideal carry gun but I don't use it for carry because I have only one hand and the cylinder latch opens backward from the Smiths making it difficult for me.
Handle and shoot as many different makes and models as you can and read opinions on forums. They are helpful so read a lot (yes it's two words)
, but...in the long run buy what YOU like.