Hello Maris,
There will be differing opinion on whether you can just go ahead and buy any make that fits, since brake components are brake components, are brake components, and they all satisfy the required specification, so Klaxcar ( as with Cliff - I’ve never heard of them) should be adequate.
My experience points me in the direction that basic specifications have minimum and maximum acceptable limits, and for right or for wrong, I stick with reputable brands, and currently am experimenting ( with no misgivings so far) with Brembo on a family non Audi- bought at best prices from on line sellers.
This is just my view Maris - Incase it helps.
Perhaps you could let us know what you decide to buy.
Kind regards,
Gareth.