Kinda depends on what you want. Jframes are more concealable and great little revolvers, but they take a lot of practice and the light ones, like my EDC 442, can bark a bit. Kframes are a good compromise, and as long as you are using the right ammunition they do everything you need and last a lifetime. They won't fit in most pockets, though, so you need a good belt holster. The largest caliber you can get in the J and Kframes is .357. Lframes are great guns, again too big for a pocket, but everyone who has one swears by them and a few have been made in .44 Special (5 shot versions). Nframes are your real big bore alternative, .44 and .45 caliber are available. Again, the lighter ones kick a bit but pack very nicely. I'd recommend going to a range and shooting every revolver you can get your hands on, then making a decision from there.
Oh, and Welcome to the Forum!!