Pros: simple 12 receptacles, no switch that can be turned off by accident, only one side with receptacles (my rack is installed against the wall, so I don't need access from both sides), multiple ways to attach rack brackets, $60 a piece :-)
Cons: I wish the receptacles could be rotated to accommodate some external power supplies. I opened the PDU to check if this would be possible, but I would have to replace the whole wiring inside, so I gave up the idea. With 3 PDUs I have connected to my UPS (one for each group the UPS allows to control/monitor) I should have no problem with insufficient amount of available receptacles.