Looks like the CS 11 has dropped the AC port and sag control from the 12, and it has an output to power an XP 5 or XP 8. The XP 5 and 8 drop the IEC power plugs, and have outputs to daisy chain to more XP 5/8 units. The XP 5 has SKUs for with and without a power supply, the XP 8 is only sold with a power supply.
Daisy chaining multiple pedals can introduce hum, but it also depends on what combinations of pedals you’re chaining together off one supply. If you are happy with the sound you have, then it’s probably not worth the money to change to an isolated power supply. If you’re finding you have to roll back the volume knob on your guitar to zero to get rid of noise/hum when you’re not playing and it really irritates you, then it’s worth trying an isolated supply.
