favourite YANG data-store?

Hi folks,
Was just wondering what are you folks using as production YANG data store
and what do you like about the particular one you're using? Or maybe folks
using OANP what is your YANG DS of choice?
Plan on using it as in memory DS primarily for service, network YANG
modules, (in addition to the usual use case of device modules),
- so quite a lot of data as you can imagine storing data for higher
abstraction layers Service & Network.
Been looking at ODL and Confd thus far.