I too bought the genuine article form Rates. Prompt delivery and a great product. The deep lips surrounding the mat stop the crap escaping.I have just gone for the Ford boot liner after being impressed with the fit of the deep side rubber mats. Got it from Rates on Ebay with a TCB £5 bonus cashback offer.
The front rubber mats are really good and are a perfect fit - still not decided about the boot liner, but I know what you mean about stuff not sliding easily, which is what you want, but can take you by surpriseThe "non slip" boot mat does what it says on the tin, nearly did myself an injury trying to slide something into the boot