I have a fairly extensive Control4 system with over 150 lighting loads, about half of which are Insteon, with the rest being C4. I'm using the Insteon V2 driver that's available on Houselogix.com along with a 2242-222 Insteon Hub. From a programming standpoint, it takes a bit of work to get both types of devices to coexist, especially in scenes, but once it's correctly configured, the insteon devices are both fast and reliable. If you're going to use a lot of switches, I highly recommend it from a cost standpoint, but be aware that the documentation for the driver, while extensive, is not entirely accurate and intuitive.
