Actually most of the smart home lighting module with neutral wiring are able to support all sort of lighting.
Smart home from the DIY perspective, i think Logitech Harmony series offer the best performance since it can control devices via IR, RF which cover most of the appliances for the home.
As to achieve a full home automation integrating with home entertainment, i would suggest brands like Control4, Creston etc....
Amazon Echo is a good platform to manage all the various smart devices but there are limitation. Firstly, you can't do any programming on Amazon, alot of logic need to go through the various 3rd party apps like IFTTT, Stringify... So there will always be some lag.... (correct me if i am wrong)....