I've got an SSA-E in both of my DD's, and it's an incredible trigger. For precision shooting, I doubt you can get better. And even for faster, rapid-fire shooting, it's very solid as well. There's so little pull weight that you just blow thru the first stage, and pop. I could see the SSA-E being a little light for a duty/combat trigger, but I don't know if you'll find a better all-around trigger for civilian use.
For how much I love the SSA-E, I am pondering going the route of the S3G for my next build tho...which will be a 300 Blackout SBR.