If they have silicone, the PH4967 is the best value for $3.88. Second comes supertech ST4967. It depends on your application. For my Kia the PH9688 is $6-7 which isnt worth it when the ST9688 is $2.99. The tough guard isnt priced correctly IMO but likely due to the less volume. With amazon subscribe, you can get a ultra for nearly the price of a tough guard.