Caliber:
It has adequate power in a reasonable sizes format-small enough for continued, comfortable, concealed carry. Shot placement is still important.
Action Type:
With DAO type of action, one merely pulls the pistols trigger to put into action. No safeties to swipe, no levers to move, no buttons to push, one simply points and pulls the trigger. I like the consistency of this type of trigger coupled with the fact that its pull is long enough to require a conscious act to fire it.
Overall Size:
The size is big enough to shoot well yet small enough to conceal carry comfortably.
Round Count:
It has enough ammo (13 + 1 in the chamber) to see me through any eventuality I might encounter.
Weight:
For ultimate carry piece, the lighter the better.
Accuracy and Reliability:
It function 100% of the time with my carry ammo and hits where I aimed my sight.