Strut Rod Bushings poly vs rubber

I am putting in the PST strut rods. Qkcuda installed his and says they were a great upgrade. Andrew.
I installed RMS adjustable strut rods in the cuda a few years ago. They are almost identical to the PST ones Andrew just bought. The aluminum biscuits basically sandwich the hole in the K frame so it becomes a solid unit with nothing to wear. The heim joint takes all the movement. These were probably the best single change to free up the front suspension. I will be installing complete set of PST polygraphite bushings this winter, which I hope will help further.