I hear a lot of people shoot pistols weaver. I shoot isoceles because it feels good for me. I think some stances are better for shooting in different sorts of areas. Like a narrow hallway I would shoot weaver to help keep my elbows from hitting the sides of the walls . I would suggest that how you can find your best shooting position is to find out where your arms are in such a position where your sights are reasonably correlated to your mean point of impact. And you figure that out with time experimenting for what stances that do not bugg and tires your deltoids. Therefore you can hold your gun for a longer period of time. Without getting muscle strain. And on arms locked or bent. I would say arms comftorable and relaxed to put out effective shots. Usually that would help your accuracy ability for most situations.