hi busy day today im wanting to fit satnav but the oem one looks a bit hard to fit plus theres all the parts to get hold of eg ebay or scrap yard , so i was thinking of this 2 Din DVD/GPS Player FOR BMW 5/7/X5 Series E38/E39/E53 on eBay (end time 06-Oct-10 16:25:40 BST) please tell me if its crap or would it be better going down the oem road thanks paul