Vibration Damper / reducer for rack and pinion steering . Borgeson or Flaming River ?

Hi all, now I need again a recommend from you guys, Because Ihave the choice between Borgeson and Flaming River.
what you prefer :Borgeson or Flaming River ?

Some one use kind of this vibration reducer / damper and have experience with it?
My set up now is :
Flaming River rack and pinion DR502-5
With two universal joints one on the Original shortened column , and one at the rack and pinion. , between are a double D -Shaft and a support bearing, what normally only recommend by more than 2 joints in the steering , but anyway I have one, because my control freak suspension First Generation had one bracket for the support on the frame already welded .
Picture 3 is flaming river
Picture 1 is Borgeson
Picture 2 is actual version without any vibration damper all flaming river with two „Standart „ u- joints in the steering.

Check with Speedway motors.

https://www.speedwaymotors.com/Speedway-Steering-Shaft-Inline-Vibration-Dampener,2036.html

5.7 hemi said:

Check with Speedway motors.

https://www.speedwaymotors.com/Speedway-Steering-Shaft-Inline-Vibration-Dampener,2036.html

Click to expand...

It not looks they have it in 3/4“-DD and other side in 9/16-26 splines . that’s my rack and pinion size mustang 2 FR502-5 rack and pinion.

One thing I do know about Borgeson part is the isolator also isolates the ground through your steering column which in turn makes it so your horn won't work, Ask me how I know! Not sure flaming river is the same. If you use either of these I would check for continuity across the the joint and as Borgeson recommended run a jumper wire across before installation.