When replacing your plugs , Unless you have a turbo or your heads are shaved go with the Original Equipment . That is easy to find in your hand book or sometimes under the hood will have the correct spark plug for your Corolla .
These cars need Iridium , I would either go with Denso or NGK , Usually the NGK burns hotter then the OEM Denso but either is fine . Don't let the parts store sell you another name brand . These plugs can be expensive but if you add up 120k and how many years you went without purchasing plugs it all adds up . Always check for cracks before installing and use Anti Seize on the threads and Dielectric grease for the tip of the plug where the wire connects this way from there on out it is easy to get on and off .
Some Corollas do come with a double tip and they have to use the double tip plugs so make sure you purchase the correct OEM plug - Good Luck