Shot both, the sig 226 ldc has a Great sa only trigger, a little to much pre travel.
The normal da sig 226 trigger,wel i think the shadow is better out of the box.
For competition : see how high the slide of the sig is in your hand....for me the shadow is much faster in doubletaps and rapid fire, on steelplates and ipsc.
It is Way faster back on target and don't jumps so much
I would love to have a 226, but then it wil only be for target shooting and the Nice look
Start with a standaard shadow, you wil be surprised how good it is
And then if you can shoot with it ,start to upgrade