One problem I have with silicone tubing is its flexibility. When hot, it may be too flexible for use as a pump
This is my biggest complaint - it can kink / contract near the barb when its on the suction side of the pump. PITA, but since I bought $40 worth of tubing, I'll use it until it needs replaced...
I have never had this problem. I use a pump from the boil to the plate chiller too. It is described as heavy wall tubing on the seller's website. Maybe that is the difference?