I have a DAO pt111 millenium pro. It has only malfunctioned once - a FTE using Remington green box FMJ. I'm not sure if it was just a fluke or what, but I consider it to be a reliable gun.
I carried it IWB using a "hidden ally" holster by High Noon holsters. It was comfortable to carry.
The only thing I don't like about it is the trigger. The trigger is fairly smooth, but it is l-o-n-g. I find it hard to shoot accurately. I'm not the only one, my CCW instructor shot it (Philip Van Cleve, President of VCDL) and he didn't think it was particularly accurate either. Now that I've moved to a state that doesn't allow CCW, my next purchase will be an XD45 compact. I have found the trigger on those to be a lot nicer, but they also cost $200 more.