The ones which are £100 per brake and discontinued?
You can still get the alloy ones, TRP Eurox, but I wasn't going to recommend them because you need to have a hand grip like Geoff Capes to be able to stop your bike. Forget about emergency stops.
Same as the carbon ones thoough, dey look so nize?
I disagree. I’ve had great success with avid shorty and shimano and currently have excellent braking with TRP Revox
Anything but the cheapest seem pretty good. Probably wouldn’t ride them for downhill but never felt like I needed more power for road or cx