I've been using the same system for almost 5 years now, with no real problems. Has more than paid for itself by now. I didn't switch to OpenHAB though, but ins

I've been using the same system for almost 5 years now, with no real problems. Has more than paid for itself by now. I didn't switch to OpenHAB though, but instead hacked their original desktop control software, which is actually a Java web app with a localhost-bound Tomcat, to make it runnable on a headless Linux box and bind to the LAN IP. This way I have their control panel available constantly and remotely. Works surprisingly well and stable, given that this mode of operation was never intended. Their actually-intended remote control path (via a server provided by the manufacturer) is crap however, very slow reaction time, unreliable and you somehow have to pay a subscription after a trial period.