I've used the DeSantis Nemesis & Superfly (Nemesis that's super sticky), Uncle Mikes
as well as a few leather types made by small shops and once I tried a Mika Pocket Holster I never looked back.
The gun comes out & goes back into a Mika better than all the others mentioned.
Don't get me wrong, the others are decent holsters, so your mileage may vary.
The beauty of Robert Mika's design is that it incorporates some sort of thin insert around
the top opening, between the inner & outer layers, which is thin enough to be easily compressed
but resilient enough to keep the top open for easy access to your gun without you feeling any
pressure on your leg (from the insert) or "printing" on the outside of your garment.
Below you will see a close-up of the area of the top insert, which you can see the outline of through
the outer layer if you look closely. This insert basically does the same thing you would if you took an
end opening envelope and squeezed it from the sides in order to get it to pop / splay open.
It's like it serves as a second hand down in your pocket and makes one-handed reholstering a breeze.
One last thing I would like to add. When you order a Mika Pocket Holster it is made
specifically for the gun you call out when ordering, as opposed to the generic sizes,
No.2, 3 etc. on the Uncle Mike's. When I ordered one for the Model 36 Robert called,
which he does for every order, and wanted to know if the gun had adjustable or fixed sights.
With that said, my wife and I mix & match any of the Mika's for our J-Frames with
1 7/8" up to 2.5" bbl's and they work just fine with whatever J we are going with at the time.