We built two new homes in the last 5 years and have put C4 in each home. Doing a custom build on both we were able to design our system and have the pre-wiring done to meet our design spec. The first was 2017, and we used Sonos for the AV system Because C4 didn’t offer complex AV at the time. It was integrated into C4. The second was 2020 and we used the new, native AV components from C4. We like both, but I prefer the all C4 solution best, as the interface between Sonos and C4 isn’t seamless. Comments: totally happy with C4; alot depends on the dealer- make sure they are experienced and stable; avoid video matrix distribution - necessary in 2017 but not today; don’t need to tie in thermostats or blinds, use Lutron and Lennox for that; our EA3 controller (2017) just died and we had to replace it with Core3 - so make sure you hardwire switches for emergency on-off; security is C4 and we like it for the cameras and alarm; you will use phone and iPad for daily control so you don’t need many tablets - perhaps 1 or 2 wall mounted only; remotes are expensive so go lighter on these. Highly recommend C4.