All Accents with the 1.6 use the same spark plug. Ignore Elmer. I'd
recommend NGK, since of the brands available at the dealer, these provide
the best performance. I've had positive and negative experiences with
Bosch. And, if you're doing the job yourself, it's pretty simple.
There's not much need to spend any extra on platinum plugs. Just make
sure you use a quality plug (and the correct one for the vehicle).