I've got PFs 8mm and it's OK. Very durable, doesn't kink too much and works fine. Having said that I started using aquadaptor pole hose as my main hose (I added 50m to the end of 50m of PFs hose) and I prefer it. It's much lighter, especially when you are pulling out 50m, still durable, kinks a bit more but works well for me. No issues with the PF stuff though.