Homematic IP + BidCoS on RPi: Which software to use?

[Tobi77 (Tobias)]

As the discussion on alternatives seems to interest several people, I opened a thread here:

Which heating thermostats work well?

Dear all, I am considering to renew my heating thermostats (Danfoss valves). Clearly, the new system should work well with OH. I tried Danfoss/Devolo Z-Wave, but they have response times of 30 mins at acceptable battery lifetime. As I change temperature spontaneously, this is no option. Then I tried Eurotronic Z-Wave with FLIRS. Nice, but their firmware hangs form time to time, opening the valves. Multiple Amazon reviews report the same issue. Customer service does not respond. Zigbee valves…

In a nutshell: I was not able to find a reliable OSS solution, but please join the discussion.