This is a little old, but my opinion after 15 yrs of shooting and carrying concealed point me to the nice leather holsters made by Kramer, Milt Sparks, DelFatti, and my personal favorite, TT Gunleather. I have two holsters from him, with another on the way. I carry my 30 in his OWB snap holster and it keeps it very secure, comfortable, and very close to the body. An overshirt completely hides it with no printing. I also have one for my Glock 19 and one on the way for my 1911.
I don't use anything else now. I have Bianchis, a Sam Andrews, a couple of Don Humes, had a few Galcos and a Kramer IWB. The nylon holsters to me are a joke for anything other than protecting the gun in storage. I had one of the Uncle Mikes when I turned 21 for my first holster. It didn't take me long to see the difference.