Welcome and congrats
I think a $250-$300 Sigma is the best hi-cap, lifetime guarantee, semi currently on the market.
Don't let the haters tell you differently.
IF the trigger is rough and gritty, you can do this:
1. Call S&W customer service and tell them it's "gritty and rough".
Do NOT tell them it's "stiff" (it was designed to be "stiff").
2. They'll email a prepaid label to return the frame to them.
3. In a couple of weeks they'll return it, and it will be vastly improved.
All of this they'll do on their dime.
They've done four of my Sigma's just as described, and I've gotten excellent customer service from S&W.
Be safe and shoot it a lot!
btw: Is the Smith $50 rebate still in effect on Sigma's?