Core switches and automation

Hey all,

It's time to replace our core infrastructure and management wants it automated. We do a little bit with ANSIBLE, mostly on new ISR routers out of the box which works well to not make mistakes. Also use it for small changes across a large number of devices which is great. However, we never got it to work on Nexus 7.3

Now, any sort of ACI type of solution from anyone isn't happening. So where does that leave us? I spoke with Juniper and wasn't terribly impressed and already know how the Cisco game goes. In an ideal world, every config change takes place via running the entire config file rather than bits of smaller playbooks, like how a server runs a puppet agent every 30 minutes. Cisco has a ton of ansible modules and they are sending us demo equipment to test but is Juniper just friendlier here?

Simple design, couple of cores and then top of rack switches. I can go into more detail but design help isn't really what I need, it's automation advice. Thank you!