I've recently installed Hue White Ambiance Starter Kit to ease into home automation. It's been a significant convenience, but it's been anything but seamless.
I can use either Siri or the HomeKit app to control the lights remotely from my Watch or phone. All too often Siri can't connect to the lights, but HomeKit can. When leaving the house and breaking the WiFi connection, I sometimes have to turn WiFi off then on at the control center to reconnect to the Hue Bridge. I've had to reboot the bridge twice, and it's received two firmware updates in the month that I've had it.
They provide inadequate documentation for setup. Their app needs a lot of work and I blame them for the poor Siri (poor Siri!) integration. Their support has received a lot of complaints, but I haven't needed it yet.
My needs are simple so I'm willing to add two, maybe three more lights, all White Ambiance. Alexa may interface better with the Hue system. I also would prefer saying "Alexa,...' over 'Hey Siri'. I find the 'Hey' part annoying.