I remember the instructor in the armorer class remarking that the standard DAO trigger in the standard (classic) P-series was proof that even Sig could make a bad trigger. The new Enhanced DAO (DAK) was intended to try and keep their metal-framed guns in the running for LE/Gov sales of DAO service weapons.
As I recall, the weight of the original DAO in the P-series was over 9lbs.
The primary trigger stroke of the Enhanced Double Action Only (DAK) requires approx. 6.6 pounds of pressure to fire the trigger, and it's the 'full length' trigger stroke of the two.
The intermediate trigger stroke requires a partial reset of the trigger, and a heavier (approx 8.3 pounds) amount of pressure to fire the pistol.
Granted, the primary trigger stroke actually tends to 'feel' lighter to many folks, because of the excellent geometry of the design ... but it's long, too.
Even though I'm a long time DA revolver shooter, I find myself interested in neither the original S&W 3rd gen DAO, DAK or LEM actions.
Oddly, enough, I find the TDA of the major makers to be acceptable for service/defensive use, though. Go figure.