Which EGR valve?

Hi, I am gradually going ththrough the list of repairs and improvements on my laguna 2 which has the 1.9dci engine. I have just had the timing belt and water pump replaced (£240 all in for those that are interested) and next is a good service of the engine including replacing the egr valve, engine had done just under 107k. But I am wondering which EGR valve to go for ie eBay special at 40 quid, genuine at 112, euro car parts at 50 odd or GST for 150!!!