Agree with Jeep4Win said.
Kind of a decision only you can answer. It makes sense to do lockers with gearing but also makes sense NOT to get em if you know you won’t use em. For mild off-roading to light off-roading (fire trails). You most likely won’t need lockers.
Also, a good way to tell is to check the raceway set screws. Stainless steel set screws indicate the newer version which allows off the shelf grade specific grease. Black oxide set screws still require 000 grease.
I can’t speak for Teraflex as I’ve only used RK only. So far, I’ve used their adventure series mid arm. No issues. Now, I’m running their long arm setup. I’ve been happy with them! For me, I also wouldn’t hesitate w Teraflex. They make some nice quality stuff!