I don't know what brands are readily available for you, but here in UK I tend to use Delphi or Pagid. They have online after-market parts catalogues, and you can enter the Hyundai part code and it will take you straight to their equivalent part. I expect other manufacturers have part selection tools as well.
Also note that if you want to replace the thin steel shims that the brake pads slide in, some brands may include these with the pads, others don't. Genuine Hyundai parts include them. If you have to buy them separately that additional cost should be factored in when comparing brands.
When replacing the pads check that the caliper glide pins slide in and out freely. When replacing pads I always take the opportunity to pull the pins out, wipe off the old grease, make sure they're not corroded, then re-grease them with a suitable brake grease. I bought a pot of Permatex grease. Replace the pins if they're corroded, they're not expensive, around 1/3 the price of a set of brake pads, and if they do start to bind the pads will wear out prematurely
