Sway control

Hey all! I have a 03 f150 fx4 and a 2010 keystone springdale. The trailer is 33' total and weighs 7100# dry. With w/d truck is good for 8700#. Now I have frictional sway control and wonder if I should add 1 more or if I should switch my set up to the reese streight line? Anyone used both? And which is better. The way I see it is if a tractor trailer flys past me,doesn't matter what I have I'm gonna feel it! It's not too bad what I have now,just want a bit more stability. Thanks