Any thing by Bianchi or Galco is a good place to start. I carry my Smith 637 in a Bianchi IWB Professional or a Galco Fletch OWB.
Just bought a CCW ammo carrier from Merinickle. Excellent workmanship. Can't speak for their holsters, but I'm sure they are all that they are claimed to be. They are running 4 to 6 weeks on holsters right now however.
"He who laughs last, laughs dead." Homer Simpson