The L frame revolvers (686, 681, 586 etc.) are much more practical for standard carry than N frames, IMO, though you'll also find a lot of love for N frames on this site. One thing I didn't see mentioned in the other comments, however, (sorry if I missed it) is a warning that early L frames were subject to a recall back in the 1980's. A firing pin/primer issue, and the ones that have been sent back have (as I recall) have an M (or maybe an X) stamped on the frame under the crane. If you're looking for an early N frame, and you see one without the stamp telling you it's been sent in for the recall, be cautious.
I say this because, while S&W will take the gun and a fix it free of charge even to this day (as well as pay for the shipping) I'm not confident that S&W still has people working there who are capable of adequately fixing this problem. I had a 681 that I sent in a couple of years ago, and they never really got the problem fixed.
The good news is that you can mostly avoid the problem by using ammo with firm primers. My gun worked fine with everything except powerful Buffalo Bore ammo. So I sent the gun in, but after a protracted stay at S&W, it came back with more or less the same problem.
There are a lot of people out there who talk down the lock era guns, but my current recent lock era 586 is a much better gun than my my old pre-lock 681 no dash was, and not just with regards to the recall. Seemed more solid, too. Some people won't agree with this, but that's been my reality. Best wishes.