Bosch Platinum Plugs

If you want it to actually work, you don't want Bosch. Get NGK or Denso like it came with from the factory.

Iridium are just as good, last just as long (60K miles) and are cheaper. If you have fine tip plugs already fitted then run them to the life they state, changing them early just isn't cost effective or needed. NGK really will go the distance, can't say about other makes.