I'm currently running Magura HC one piece which are good and light (think 110g for 160MM).
My current options are:
-Swisstop Catalyst
-Hope Road
-Hope XC2 (If you find the black ones they are sub 100gs each but unknown performance)
I am running Campag 12Spd Hydro which is effectively Magura MT so should be variants out there which are okay. I will likely change pads at the same time so pad recommendations welcome!

EDIT: I Cannot run Campags own as I have 6 bolt hub pattern
