Okay, I want to see the underside of your desks, not the pretty top-down shots. That's where the truth lives!
I finally rebuilt my routing last weekend after the cat discovered the cable hammock. Current setup: mesh tray bolted to the rear rail, PSU and monitor cables in one bundle with hook-and-loop every 20cm or so, and a proper service loop so I can pull the whole rig out without unplugging anything.
What I keep going back and forth on is the basket vs. tray question. The tray hides everything but it's a nightmare to add one cable later. The basket is open and easy but it collects dust like nothing else. Have any of you actually lived with one for a year or more and still liked it?
Also, please tell me I'm not the only one who leaves a deliberate slack loop instead of pulling everything guitar-string tight!