So I'm planning on getting an HID conversion kit from sharphid.com. I emailed back and forth with John and he thinks I should get the 55W as it has a better track record on S40s with DRL. Has anyone had good experiences with the 35W bulbs on their S40? Would I need to buy the harness? I don't really care if I get a BOW, I just don't want the problems of flickering that I've heard of in the past.