First post here. I am moving in to a new house. It got a basement and 2 floors of about 50m2 each. The ground floor will have underfloor electric heating so I imagine the signal between ground floor and basement will not be good. To minimise cost I plan to get a bunch of Xiaomi zigbee sensor and populate them around. To extend the mesh I am planning to install an outlet (https://homecontrol.no/product/home-control-outlet/) at each stairway to act as repeater. I have done a fair bit of reading on the net and still can’t decide on which Zigbee solutions I would like to have, Deconz or Zigate. They both seems to support Xiaomi sensors well but I am not sure how easy are they in terms of adding unsupported devices. I think the HomeControl outlet may be not be supported in both as it is from a small Norwegian vendor. I am also planning to ditch the Hue hub and not sure if either of them can handle RGB ligthstrip. Which one do you guys prefer?
I will also have a Z-wave mesh with thermostat on each floor and hope the signal would be strong enough to reach the controller.
Thanks
To make things more complex for you, there is another option now. Zigbee2mqtt: getting rid of your proprietary Zigbee bridges (Xiaomi, Hue, TRADFRI)
Thanks. From what I gather:
Deconz:
Lightstrip and HomeControl socket works out of the box
More configurations needed compare to the other 2
Zigate:
Easier to setup in HA
Zigbee2mqtt
Cheaper hardware. I have the option to put one of these on each floor or even garage
Am I wrong?
zigbee2mqtt also has the advantage that new devices can be added very easy.
Really impressed at the community on Github that zigbee2mqtt has built in two weeks. I see developers from other projects offering to join forces. Great! 
By having the device support in open source rather than in device firmware it allows the community to add support for devices that matter to them.
Can’t find if these outlets have power consumption monitoring, better chose ones with power consumption
Thanks all. Just placed my order on Aliexpress for everything I needed for Zigbee2mqtt. I reckon even if the mesh can’t go between floor, I can add another Pi Zero W with Zigbee2mqtt and still cheaper than going for a Conbee stick. The first hurdle after the equipments arrive is to try to get Hue white and Hue lightstrip to work. Hope somebody can beat me to get this work first.
Nice, This already gives you an impression how to support new devices: https://github.com/Koenkk/zigbee2mqtt/wiki/How-to-support-new-devices. In case you require any help please create an issue here: https://github.com/Koenkk/zigbee2mqtt/issues, I would be happy to add support for these devices!