I have always bought parts from import car parts, but notice eurocar parts have an offer on for club members with a whopping 25% off.

i am looking to buy lower ball joints & track rod ends for the scoob.
Do i pay £27 ea for genuine lower ball joints at ICP or pay ECP £17.55 ea for there lower ball joint? Is it a case of genuine will last & the ECP could only last a few years or are their parts ok?
Any body had any dealings with there products? I suppose they are made to OE spec but are they as good?