RB1100AHx4 or CHR for UM

Hi
see also my recent post ‘fail over’

For UM on a RB1100 I definitely need ROS L6 (UM active sessions > 50).
But even on https://help.mikrotik.com/docs/spaces/ROS/pages/328149/RouterOS+license+keys I do not find a real answer…
Except: “All the rest of the features provided by CHR are available without restrictions.”
I’ve done a lot of reading (forum) but I want to be sure, because testing isn’t obvious. In summertime I have hundreds of active sessions.

greetings,
Dirk