Agreed. I had no problem with the conBee II itself, but it did take me a while to figure out different IKEA ZigBee devices required different 'secret handshakes' to tigger pairing. eg number of button presses within a second, I think one was 5x, another 4x, and lights were different again. Still, I prefered that hasle than having a hub dialling home.

But it was pretty stable once it was setup. Just occasional reboot on the rPI but I think that was my flakey SMS gateway code.