MX Keys for Business - there is a problem with backlighting (it suppoused to be implemented in 1.86 version of Option+ but it didn't work , so you've made a step back and in ver. 1.87 the backlighting is in options menu, like in 1.85) - It is frustrating to on/off backlighting (yiu have to open Option+ and then go to options menu etc.) - I think a possibility to assign "action" to the programable buttons on MX keybord would solve that issue (or assigning to mouse buttons - MX master 3s for business)