[dgacmu]

I'd believe it. Do you have pointers to anything more with experience about this? What falls down?

(That said, I don't see needing to go there. My house has, from a quick mental count, about 52 total switches. I'm probably missing a few, but that's the right ballpark. A 300 switch house sounds like a monster.)

[jondiggsit]

Lutron RA2 systems are very reliable. I centrally (home-run) wire all of the switches for future upgradeability, but I have very little issue with their systems. They can run wirelessly, but if its new construction, must also wire.

Unless the application is a Star Wars level system, I recommend RA2, otherwise Lutron Homeworks can be your best friend.