In a world of SP-101 fans... I'm the odd man out!
There are a lot of SP fans here... and rightfully so. And hey, don't get me wrong, this is not a slam on the SP... I love my 3" SP-101, for limited applications and nothing larger can possible work. They are fine little revos indeed, for concealed carry needs (though they do need to go in a holster). But honestly, for shooting pleasure they pale in comparison to the slightly bigger and heavier GP-100's and S&W K-frames and L-frames, all of which are available with "snub nose" 2.5" and 3" barrels.
I do occasionally rely on my SP-101 as a belt-carry gun, but I never choose it when I want to have some pleasureable shooting time, home or RV defense, etc. They are harder to be accurate with and transmit more bothersome recoil than you will find with anything bigger. And they are limited to 5-shot capacity.
Yes, they're great for a "sort-of" little gun, but they're not that little... You can get great snub nose guns in GP, K and L frames which are not much bigger, but are much more fun to shoot and much better "all-around" guns.
May I suggest a 2.5" Model 19 or 66, or a 3" Model 13, 65, or 66? Or a 3" GP-100? Or a 2.5" or 3" 686? These are all great "snub-nose" guns which are not difficult to conceal and are much better all-around guns than the SP could ever hope to be.
Bandit, if you want the smallest .357 that's actually relatively "shootable", the SP is a very good choice. But understand that by going with the slightly smaller SP, you give up a lot that is available with a slightly larger gun. The SP is too big for deep concealment and really should be carried in a holster... at that point, you can carry a 2.5" K-frame just about as easily. But if you want a snubnose .357 which is a luxury to shoot and a great all around performer, look to something a little larger than the SP.