We purchased a 2020 JL last October. It is our 7th Jeep, 3rd Wrangler. On this one I did all the toad prep installation myself.
I've always used the Blue Ox tow bar and baseplate as much because thats what the dealer that did our first set up installed. I have no experience with other systems so can't directly compare. I know I do not like the system that leaves a big ugly shin busting crossbar across the front when not in use. Apparently it can be removed but that's just something else I have to deal with and find someplace to store.
On our current Jeep I went for something much cleaner in appearance, easier to install and leaves nothing hanging under the bumper as even the Blue Ox base plate does. I installed the Maximus 3 tow loops and purchased the adapters for the end of the tow bar to make them compatible.
We started using the Patriot brake system but it's another hassle you don't have to deal with. As others have already mentioned the new Spartan chassis comes with the coach side of the air activated supplimental brake system, all you'd have to buy is the Air Force One "second vehicle" kit to set up the Jeep. Install is straight forward except tapping into the brake booster, using their generic instructions. The vacuum line is anything but straight and most of it is hidden under other under hood assemblies. I introduced a simple loop of additional vacuum line into the system which made the install simple.
Remember, you'll need to address activation of the Jeep tail lamps too. There are choices as to how to accomplish this. I used the Cooltech harness. Installation is straight forward, as long as you take your time and check your work every step of the way. It's less than half the cost of the Mopar/Jeep harness.
I'll attach some photos of my installation. Send me a PM if you'd like to exchange or discuss more information.