If your going down the hub route I have just published a binding for sonoff. Their zigbee hub is 3.0 and although not integrated yet I have one turning up tomorrow (love Amazon) so it will be present very soon. I’m not sure what it will support but I have a couple of items that don’t work with the zigbee binding and my usb stick so took a punt as it’s only cheap (£15 on eBay).
