I’ve started this topic a long time ago and really good to see all the discussions.
Man do I love the OpenHAB project!
Anyway, shortly after opening the topic I’ve made the decision to go for a Intel NUC. And until today I’ve never regretted this decision. I’ve been running the OS (Debian) and Openhab without ANY issue (except for my own screw ups in the config ofcourse)
But I had a now a mix between “older” OS, and OpenHAB v1 and v2…so started last week to build my system again from scratch on the NUC.
Now on the latest Debian 64-bit build and the latest OpenHAB v2 stable release.
Had some issues with drivers because of the 64 bit OS, but all is up and running. Now slowly building up the smart home again 
But I can really suggest to step to a NUC in case you are experiencing issues on the Pi and/or want to have a more reliable and “professional” base unit. The NUC is SUPER!
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