I've used Delphi, Pagid, and Bendix. If I can get them from Eurocarparts (ECP) or GSF Car Parts, I will. I used Bendix when GSF started selling them and they were a good price, but they seem not to sell them anymore and I think Bendix and Pagid are now the same, and Pagid are a lot more expensive than they used to be. GSF sell Delphi, but I also look online to see if they're cheaper by mail order.
Whatever you do, use
www.partsouq.com and search using your VIN to get the part number for discs and pads. You can then go on the Delphi and Pagid websites and search for their part number that cross-references the Hyundai part. Don't assume the parts shops know what the parts should be based on your reg number, they sometimes get it wrong.
On my 2015 1.6 CRDi, the last time I replaced the front discs was in July 2021 and they cost £80 for the pair. I last replaced the rear discs in April 2021, they were Bendix, £60. Front pads I changed in September 2020, Pagid, £37, and rear pads changed in October 2023, Pagid, £24, although I'd bought them in Jan 2020
Those prices are just for the parts, no labour costs as I do them myself.