I have a DJ strip w/ dc8s.
Everything that requires timing/controlling is on the DC8 (lights, dosing pumps, heaters, etc).
Things that are on 24hrs or are only used periodically on the strip (Return pump, in tank pumps, skimmer pumps, under cabinet light
It's much easier to flip a switch to individually turn things on and off, the light on the switch lets me know what's on, and with some tape labels it's easy to know what switch is what. So turning off pumps is easy and safe, no dripping hands pulling on a plug potentially dripping water in it, etc. Plus the constant unplugging and plugging in of a cord can damage it.