One thing to add though - I'm about to call Hayward to confirm the use of the network module, but without it, you can still control the colors of the ColorLogic LEDs and use the standard light shows. You control it by using the on/off switch with specific pauses. You only need the network module if you want to use the custom programs (to create your own), or if your pool has multiple lights and you want them all in sync (which I would think you would). I only have 1 light in the deep end, and the more I think about it, to just have the flexibility to create two custom light shows may not be worth the $250 and then the install time. hmm...nevertheless, time for an answer...
But I can say it. The PS units only can use the network module, the PL units cannot. His explanation is the PS units are bit more advanced in their programming capability, and can control a second heater, etc, but other than that, and the ability to use the colorlogic module, very similar. I have the AquaPlus PL unit, so I'm out of luck, but as I mentioned above, in hindsight, I don't think I really even needed the module in the first place. Next stop, cancel that order and save my money!