I will say this, to me the L-frame S&W's are the finest 357's ever made. They are the perfect size for the caliber, & will do anything a 357 can. The K-frame Magnums were Bill Jordan's idea for a cop's holster gun, to be shot mostly with 38 Spl, & carried with 357 Mag. The N-frames IMHO are too big for the 357 Mag, they came out in the 30's, when heat treatment wasn't what it is now. N'frames are great in a caliber that begins with a "4". FWIW, but that's just me, personally, I own both a 66 & 686, so my advice is "suit yourself"!