S,
The main rule about automation is that the Automation system, the VS pump, and the SWCG should all be the same brand so that they can "talk" to each other.
I'm a Pentair kind of guy, but Hayward and Jandy are all about the same.
I am also a firm believer in the bigger is better rule. You can never go too big with VS pump, SWCGs or cartridge filters.
The main problem right now is that demand has out-stripped supply and almost everything is impossible to find.
I currently have a Pentair EasyTouch automation system that has an internal SWCG power center, IC40 salt cell, 3 HP IntelliFlo VS pump, and CCP-520 cartridge filter. So far it has been the perfect choice.
That said, if I were to build a new pool today, I would go with the new IntelliCenter instead of the EasyTouch. The two automation systems are similar, but the EasyTouch is a black and white alphanumeric system, while the IntelliCenter is color and uses a touch screen like your phone. The ET has a max of 12 schedules, the IC has a max of 100. The IntelliCenter is just an all-around better system for about the same money.
If there is any downside to upgrading the equipment pad, it is a good chunk of change to do it all at once.
Thanks,
Jim R.