Rag joint - rubber or poly?

[Jonk67]

Just wondering if this'll make a bit of difference, anyone felt steering with both types? I swapped a collapseable column into my '67 to get rid of the spearomatic and had my gearbox rebuilt with the short shaft and just scored a coupler so should I install with a rubber or poly rag? I have PS, roller perches, 1" drop, adj. strut rods already.
Thanks, Jon

 

[tarafied1]

thats a good question...