Hard to say what is better. I have the Operator that is current production, and love it.
I do believe the TRP is discontinued model. Also, if I remember right Chris Kyle carried the pistol and spoke highly of it until it taken a blast after which he carried a different pistol in .45 cal. Also the bull barrel and 1 piece guide rod. My current Operator production model has the standard recoil and spring and your normal barrel. The barrel also has a cutout to see if it has a round in the chamber but it is very difficult to see in the dark.
Overall I would go with the Operator only because I own it and because it would match your 9mm Operator. I got mine with a 10% discount so it was like 900 bucks new which I guess is okay. You really can't go wrong, in my opinion.