I have 3 that I enjoy for IWB and AIWB, but as others have said you mileage will vary based on body type and preferences. Most people end up with a drawer full of holsters they don’t use for this reason. For me though it was a matter of playing with ride height, cant, and the right belt to comfortably carry at 4 O’clock without printing.
First up is a CYA holster. It sits fairly low in ride height and has a slightly adjustable cant. It also comes with a sweat guard that extends along the slide which helps with it digging into your side. The holster is made of boltaron which is harder, less brittle, and more durable than kydex. Plus the company is veteran owned.
Smith & Wesson M&P 9/40 M2.0 - 3.6" Compact & 3.5" Compact IWB Holster for Concealed Carry
Second is the Phlster skeleton. It’s a two piece kydex holster with adjustable ride height and a loop instead of a clip which makes canting it easy. Just under where the belt sits it has a wing that pushes the grip inward. Other than these features the holster is minimalistic and very comfortable. Even being a two piece holster retention is fantastic. Although, I am still cautious about re-holstering while wearing it because the 2 pieces do squeeze in a bit with no gun inside. It can be done and I’ve had no issues, but I usually take the holster off first, holster, then tuck it back in.
Gen 2 M&P Shield Skeleton Holster - PHLSTER Kydex Holsters and Medical Accessories
Lastly is the Blackhawk ARC. Ride height is adjustable although not as much as I would like as it does sit slightly higher than the other holsters.The clip is only held on with one screw so it can rotate fully to what ever cant you desire and is reversible for left or right carry. Once you’ve found your position just torque the screw down and it doesn’t move. It’s made of an injection molded polymer which holds it shape, but does have a little give which actually makes it quite comfortable. Because it’s injection molded all the corners are very nicely rounded making for no areas that dig in. Retention worried me at first do to being a softer polymer, but it is adjustable and I’ve had no problems. The clip leaves a little to be desired since it looks a little flimsy, but does hold the belt very well with a small hook. Overall the holster isn’t as refined as the others, but works and for a very low price point.
Standard A.R.C. IWB Holster - BLACKHAWK
Recently I picked up a Kore essentials slide belt and it is now my go to edc belt. It is very stiff do to a polymer core that the belt wraps around, but still comfortable. The stiffness makes holding more weight on the belt almost unnoticeable. It’s also a slide belt with a ratchet system on the inside. This is great for a few reasons. It is adjustable in 1/4” increments. The ratchet system is on the inside of the belt so no wear marks are visible. Plus the ratchet system seems very robust and should last a long time. They come in nylon and leather. Kore Essentials also make dress belts that aren’t as stiff with a similar ratchet system.
X1 BUCKLE | BLACK TACTICAL GUN BELT