New to FreeNAS. Start with 9.3, or use ol' reliable 9.2?

I'm not really asking about the learning curve, more so I'm wondering if there's any reason to think that the new 9.3 release (slated for tomorrow 12/08/2014) would be less reliable than the current 9.2.1.9 release.

I'm using a new Lenovo TS140 Server, with 8 GB ECC RAM & 4x 3 TB WD Red's. RAIDZ2 is the intent.

Cheers.