[5 of 5 Stars!]I have had several different holsters but Uncle Mike's #5 Shoulder Holster was my first shoulder holster that I ever bought. It fit like a glove right off the bat. It was very comfortable and easy to adjust.
I used it for my S&W 915 and when I wore it under my suit coat you couldn't tell I had it on and was carrying. I have had many people give me a hug and were a little startled because they had no inclination it was there until they felt it.
I carried two spare mags on the non gun side and it balanced out the weight nicely.
The only time I was upset with it was when we were on vacation and I switched over to my pancake holster I forgot my shoulder holster in a drawer of the hotel we were staying in and I forgot it in there. (No I didn't forget my gun with it)
I plan on buying a new Uncle Mike's Shoulder Holster when I purchase my next hand gun.