for 2008 Civic LX R18A1 Does anybody have any experience with either the Bosch OE Finewire Iridium or the Champion Iridium? Both are less than half the price of Denso and NGK iridiums and are frequently on rebate. The stock Japanese plugs can exceed $10 *each* (and the Honda dealers charge over $20 per plug!) AFAIK, both the Bosch and Champion are the OE-style long life and not "performance" plugs (like the NGK Iridium IX). The car is nearing 100k, and the MM has not said to replace them yet, but it's likely coming soon. Will either one last the same 100K or more that the stock NGK's last?