From your selection, I would choose:
Curt TruTrack Weight Distribution System w/ Sway Control - Trunnion - 10,000 lbs GTW, 1,000 lbs TW - $379
https://www.etrailer.com/Weight-Distribution/Curt/C17500.html
Because it has the built in sway control, the others do not.
This Reese does have sway control but it's higher priced.
http://www.etrailer.com/Weight-Distribution/Reese/RP66153.html
Personally, I have the Equal-i-zer. It's the closest to the Curt Trunnion you listed above.
I had a Reese, with the chains, and will not go back to another system using the chains.
Click here. MY choice and the one I use.