I don't think you can wrong with either. I'm partial to the Smith as an owner and it's a great proven rifle. Outstanding customer service and great warranty. Core is a newer outfit out of Ocala, FL. Pretty dedicated guys from those that know them and are starting to make a mark in the market. Red Jacket... I'd stay far away from that one. No personal experience but just search some reviews. Also, when AR comparisons come up and new buyers are narrowing down brands, I NEVER see them considered.