I decided on a 9mm DAO. I use a Taurus PT-111. It is accurate and has NEVER malfunctioned during use with about 600-700 rounds. However, I won't recommend it because of problems of pin shearing, etc. others have reported here on TFL.
One day I may need to pull the weapon. When I do, I MAY have a small window of time where I give the BG a chance to "freeze". Should he comply, I may not need to fire. There is a chance that under pressure my hand may shake or I may "touch" the trigger not meaning to fire. DAO pretty well eliminates that. During practice, my first shot seems plenty accurate - whether I shoot from the draw or quickly fire after having acquired the target for a few seconds.
Having said that, I have recently been reconsidering this idea. I STILL like the idea of a long pull on the first shot, but I am warming up to the idea of SA pulls after the first shot.
Recently I accidentally ended up in a VERY BAD area when I was out of town. I was seriously thinking I might end up in a "Cincinatti-style" mini-riot. I still wanted a DA first shot but after that I was thinking that SA afterward might allow me slightly faster and more accurate shots. - I'd still run a slightly greater risk of AD though.
In practice, I can fire 2 or 3 shots rapidly and accurately from the Taurus with no problems. After that, the long trigger pull tends to slow me down for some reason.
I have nothing against SA semis though. Just don't trust myself under pressure with a light trigger pull. Also have a "mental" thing about having the hammer back on a round - even with it locked.
FWIW
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