We use the king pin stabilizer, and I put 2 jacks under the bedroom in the back - 90% of our sway is solved.
We used the 6 points for the first few outings this year, they are just OK - I liked the king pin stabilizer the most.
We got ours from amazon for ~60 bucks.
2015 Sierra Denali 3500HD SRW
2015 Jayco 38FLSA - Loaded -
B&W Companion 20K slider hitch