What calibers do you like? Do you want a .45, .40, 9mm or are all open possibilities? Do you have a trigger preference? You mention a SA and a DAO pistol, do you prefer one over the other, will you consider a traditional DA/SA as well?
With the field wide open as it is I'll tell you what I have, and what I'm currently shopping, with a 3"ish barrel.
I have a Bersa Thunder in .380. It is a bit big and heavy (by today's standards) for a .380 but it is accurate, reliable and inexpensive. It is sized similarly to the Kahr K/P9 or K/P40 so if money isn't an issue I'd go with a bigger caliber if I was you, or if size is the issue I'd go smaller (Kel-tec or NAA Guardian in .380).
I also have a Taurus PT140 Milennium Pro. I love it. It is 100% reliable (the only issue was definately ammo related), it is quite accurate, it is comfortable to shoot (despite being 23oz and in .40S&W), it is well made and it feels great in my hand. Other than my revolvers it is probably my most handled/fondled gun, it is also one of my bedside and HD pistols. It is just a few milimeters larger in any measurement than the Bersa.
My favorite 3" guns are revolvers. I know this is the auto section, but it is hard to beat a 3" K-frame for controllability, comfort, handling, and the ability to handle some pretty massive loads. My S&W 65LS (3" .357mag) is one of my favorite guns, and always will be. For a bit more concealability the 3" J-frames are pretty nice too (I hope to pick up a 3" S&W M60 or Taurus 85 before long).
I am in the market for a used Kahr K9 or K40 (3.5") right now. It is a bit thinner than my PT140 so it will be a little better for when I'm in a carry state and want to utilize IWB tucked carry (the lump from the double stack PT140 in tucked carry may be more noticable). As soon as I can afford it I want the 3" Kahr PM9 for a potent and controllable pocket gun (my best friend has one and it has been 100% reliable and isn't any harder to handle the recoil than in an all steel J-frame).