Use the Berus. They are a quality part and will last as well as the Bosch. The Bosch plugs that I've seen that are made in India are W7DC's. I always hold the set of plugs up to the light with the electrodes facing in the same direction and compare the gaps and just generally inspect them for differences. The first time I did this with a set of the Indian plugs, I was shocked. I hadn't even heard of such an item. Every plug looked different. Different gap, insulator length, center electrode exposure, overlap of the ground electrode, angles of the welded parts. Real dung! I hope that the word gets out to Bosch and they keep those parts in India. I'll bet that the boys back in the "Fatherland" won't put that junk in an expensive German engine without considering the consequences.